Maintaining our family swimming pool as a kid taught me a little rule for remembering the order for mixing water and acid: You put the acid in the swimming pool, not the swimming pool in the acid.
Exactly that. The entire video is a waste of time. Very poor explanation of everything presented. Just the current state of the world: we are what we are because of what we want us to be not because of what we deserve to be. Functional illiterates.
My high school chemistry teacher had this on the lab wall - what is it about kids named Billy and sulfuric acid? Billy, finding life a bore Drank some H2S04 Billy's father, an MD Gave him CaCO3 Now he's neutralized, it's true But he's full of CO2.
Way back years and years ago when I was in high school, the chemistry teachers would do the reaction shown in this video of the Sulfuric Acid and sugar. And every year they would invariably forget how horribly bad it would smell and end up clearing out the entire lab.
I remember the sulfuric acid in sugar experiment from 7th or 8th grade. What they don't mention in the video is how strong, terrible, and distinctive the smell is. Even with the fume hood on its highest setting and all the windows open, the stench would fill the entire building almost instantly. Everyone knew when that experiment was being demonstrated.
I once got concentrated sulfuric acid on my finger (concentrated sulfuric acid is about 18M). It feels as if someone has this piece of glowing hot steel and pushes it right into your skin. And by the way, the concentrated acid is indeed viscous and kinda looks like a syrup of sugar. This makes it very easy to pour it out of a bottle by the way, much easier than pouring water out of a bottle
I once had a distilled water bottle and I didn’t realise but the pipe was hanging over a very small sample of 12M H2SO4 and a couple of drops fell in. Just a couple of drops. It didn’t spurt, but it started fuming 😂
Back in high school, in chemistry class (Germany), the students learned the rhyme: "Erst das Wasser, dann die Säure, sonst geschieht das Ungeheure" / First the water, then the acid, otherwise the horrible happens. Yep, it sounds better in German.
I've seen this reaction many times now and I can't help but wonder if that carbon foam produced has any noteworthy structural properties. I also wonder what that reaction would look like.. in vacuum :-)
hboy007 I think you mean in zero gravity, not vacuum. same thought came to me. the point is that the weight of the carbon column is pressing on its lower layers and that might hinder the physical formulation of the column.
this guy is a hero. i have a concentrated sulfuric acid burn on my right arm, i pippetted some on me by accident, went through my labcoat and onto my bare arm, its a horrible scar now, doesn't look like it'll leave.
I've used sulfuric acid in high school chemistry labs before, but it was super dilute (Like 0.1 or 0.2 mol/L). However, I have used 6M hydrochloric acid once.
Naveek Darkroom that's not dangerous stuff. H2SO4 is dangerous only when concentrated because of its exhotermic properties. HCl is not really dangerous at all, just irritating.
There are solvation effects at work here. Water is polar (the O atom is partially negatively charged and the H atoms partially positively charged), which means that it interacts strongly with ions. When H2SO4 is added to water the reaction H2SO4(l) + 2H2O(l) ---> 2H3O(+)(aq) + SO4(2-)(aq) occurs. The (aq) means that the charged ions are completely surrounded by polar water molecules (forms something called a solvation shell) which releases energy as heat, as this interaction is a type of bonding
When an acid is dissolved in water, an equilibrium is established for (example) HCl (reversible) H+ + Cl- For stronger acids the equilibrium lies more to the right (as acids donate H+). So a pure acid that is not in a solution is a compound, but when it is in solution the acid is mainly ions.
i worked for a while in a school as a lab technician, on a temporary basis. one day, the chem labs ran out of sulphuric acid and i was asked to dilute from stock. in order to do it right, it took a load of dilutions because all we had in was 24M - which is (like the Professor) says - this really vitriolic treacle. spread that on your bread, and it'll eat the bread, the knife, the plate, the table and your leg. after which it will eat whatever's below you for dessert. strong stuff, it is.
I have seen 95% H2SO4. It was the consistency and color of a light honey. When we tried to put some into a bottle of water to do a test on it, the drop skittered around on the top of the water and tried to jump out. And for the record sulfuric acid burns hurt! Even if it is just a tiny drop.
@GRAHAMAUS Sulfur is an alternative spelling for Sulphur. The two are interchangable. I guess it depends on whether or not your country uses the British spelling of most words, or the American (United States) spelling, or some mixture or the two.
@ThePyroProduction Notice all the bubbles in the carbon. The sulfuric acid removes the water but it creates a lot of steam. The steam makes millions of holes in the carbon so it's not dense like a charcoal briquette. By weight it is less than the original sugar + acid, but less dense.
I had some spill on my arm... Just a couple drops. As I started to walk to the sink to wash it off I noticed it was already starting to hurt. I looked down and saw that my skin was bubbling in those areas. I still have some small scars.
I was trying to reduce a chloride in a stream of hydrogen which was dried by sulphuric acid in a dreschel bottle. My mistake was that the zinc I was dissolving to generate hydrogen had manganese dioxide attached to it because the zinc came from batteries. Therefore chlorine was also generated along with the hydrogen. I was wondering about the chlorine smell when the dreschel bottle top exploded spraying the car behind me with sulphuric acid. I was wearing goggles. I quickly hosed the car and avoided damage but when I finished cleaning up I saw the tube from the dreschel bottle resting on the roof of the car and the acid had eaten down to the metal. What to do? It was white so I put house paint on it. This worked for a year until the house paint changed colour and my father asked me about it. As a side note I did put a small ball of steel wool in the tube at the end that was exhausting hydrogen and it had ignited but the steel wool prevented the flame from travelling back.
The rule of adding acid to water is only necessary for concentrated phosphoric acid, concentrated sulfuric acid and concentrated perchloric acid. You can safely add water to concentrated hydrochloric acid or nitric acid.
you guys should do a video on superacids, specifically how powerful fluoroantimonic acid is compared to sulfuric acid! there's not a lot online that I can find about it but it's so interesting.
From a very old chemistry text book: ''Here lies Gillian, still and placid, She added water to the acid! Clever Jane did what she ought'er, She added acid to the water.''
Deborah Kays! I teach my students, if you spit into acid, it spits back, hence always add acid to water. Also remember alphabetical order A to W, not W to A
There is a Danish rhyme about sulphuric acid: Jeg har en onkel, Theodor, Jeg har ham ikke mere, For han tog fejl af H2O og H2SO4. I have an uncle, Theodore, I have him no-more, 'cause he mistook for H2O H2SO4 4 is pronounced somewhat like "fehre" (spelled "fire").
@DannyNHansen I've performed this demonstration many times at school in front of classes. As long as you are an experienced chemist and the reaction is properly risk assessed there nothing unsuitable about it. Once the carbon is cooled the remaining acid can be washed out and the carbon is safe to handle.
The most fascinating acid that I can think of is hydrofluoric acid. It is a weak acid, yet it can dissolve glass, something that even strong acids, such as sulfuric acid, cannot do. Maybe you can do a demonstration with hydrofluoric acid.
One of the first things I noted as an early student in chemistry how many processes used H2SO4 to precipitate compounds from solution. Now we know how.
I explained the mechanism that you were referring to. I didn't disagree with your explanation. I simply explained why what you said occurred... occurred. Why? Well, it's important for people to know. Do you consider half baked information to be something people should hear about a dangerous substance, or should they hear it in completion?
Hello Sir, I'm Prachi Mishra. I'm biggest fan of you. I have a question.. How do we purify the h2SO4?? How do we eliminate Nitrate from the H2SO4?? Can you suggest anything to me it's my humble request please reply Sir..
In the german language there is a memory hook every chemist knows: "Zuerst das Wasser dann die Säure, sonst geschieht das Ungeheure." This means: "First the water then the acid otherwise something bad happens."
The pure sulfuric acid is not dark brown, it is the stabilizers and colorants added to it to make it look dangerous and to lower the reactivity, so that your drain doesn't explode when it starts generating steam from water. I have a 2l bottle of 98.5% sulfuric acid, and indeed it is very pale yellow, and viscosity is something like sunflower oil, the ultra pure h2so4 is somewhere close to be completely transparent.
lohphat H2SO4 has a high boiling point (337 °C). One major use is to make H3PO4, which is used as fertilizer. They put it with calcium phosphate bearing rock and boil off the H3PO4. HNO3 is also used to make fertilizer like KNO3 and NH4NO3. KNO3 is used in gun powder and probably fireworks as well. These acids have plenty of other uses as well of course.
lohphat Acids are all different chemicals, like the old guy in the video said sulfuric acid is H2SO4, and hydrochloric acid is HCl. That's a huge difference first of all, and they also act differently and can react differently with the same chemical. For example, our stomach acid is hydrochloric acid. We don't want to use fluroantimonic acid(THE STRONGEST), which is *really* dangerous and will rip through your body and eat the floor for a long time until someone puts it in a teflon container. Like louis said, they can react to create useful things, like ferric chloride is often used in electronics companies to remove copper from a board to make a printed circuit board because it reacts with copper but not plastic. If you use some other acid, you may end up with but not limited to: explosions, board completely being eaten, nothing, or a chemical spill.
I am incredibly intelligent actually. My initial comment wasn't supposed to be a fountain of knowledge just some basic ideas about it and a comment relevant to the show. I read your first comment laughed and said this should be fun and Ill be completely honest you provided greater than I had ever hoped. Your one track mind has made it incredibly easy to lead you around you are really stubborn though and tend to talk in complete circles. and Im not even hitting the character limit deal with it.
Back in the 1960s there was a commercial product sold for cleaning very clogged drains, it was nearly pure H2SO4, the stuff was quite viscous like pancake syrup. I believe it was banned because it was quite dangerous. I forget the name though, but "Clout" comes to mind.
Michael Clark it probably was azeothropic H2SO4 (98%). Or even more probably 90-95%. 100% H2SO4 exists in equilibrium with SO3 so it's really really hygroscopic, not something that you can easily store in your house.
@Cellogamer That's Hyrdrochloric acid, not Sulfuric acid. Most sugars are broken down into glucose and galactose in your intestines with the help of enzymes. Amylase is a example of one of these enzymes.
A little question: S has covalence 2, how can it bond to two -OH groups and two -O groups, and what are the two -O groups bonded to if at all? I'm in fifth grade of "gymnasium" now. If you could make me understand this I'd be really glad.
I guess I see your point, but the fact that 1. I've never seen sic in parentheses before 2. wikipedia isn't always reliable and 3. where I first found out about sic didn't mention anything about parentheses. At least I don't think. It was a long time ago. I remember seeing it in my English class in brackets, however, so maybe by saying "traditional," it meant old-fashioned rather than the usual everyone-else-but-America
how hard was the carbon mad in that experiment? i think of using this reaction to fill a mold and make a shape that i need made in carbon. usually i have to carve those shapes out of expensive blocks of graphite, but if i can get cheap carbon in an exact shape - evem if a little brittle, i'd like it better. so how hard was it? can you carve it with a spoon? when you poke your finger at it - does it break?
I've noticed that this experiment is always done in beakers with straight (upright) sides. If this was done in a container with a tapered mouth, do I take it that there would be dangerous complications?
Bruce Liu I bet that depends highly on the solute/solvent, but generally speaking solutes dissolve in solvents because it's is energetically favourable to be in solution. This trend towards a more stable entropic state often releases energy and results in exothermic release of energy (though not always!) so I feel you're probably right in you're assumption. would love a video comparing some solvation experiments with thermal probe!
elemental carbon (and everything else) has different isotopes. so in fact, you end up with some isotopes of elemental carbon. the difference between isotopes is the number of neutrons, but all of them are actually elemental
What about lead acid batteries? The batteries at my work are 6 volt deep cycle batteries that we have to add distilled water too. Is it safe to do because they don’t have pure sulfuric acid in them?
I want to try the sugar/acid reaction at home. Yes, I understand the risks and would take the proper precautions. What I want to know is whether the carbon column is acidic. I noticed that the acid in the beaker disappeared when the column grew. Can I assume it is trapped within the column?
What the professor says in 2:06 is that concentrated sulfuric acid is so dangerous that to use dilute sulfuric acid, you don't dilute the sulfuric acid. You acidify the water.
Johnny was a chemist,
but Johnny is no more,
for what he thought
was h2o was h2so4
Two chemists walked into a bar. The first one said, "I want H two oh'. The second chemist said "I want H two oh too". The second chemist died.
haaaa
Chaplain Dave Sparks is hydrogen peroxide toxic?
billy must be johnny's son then
A third chemist was confused and ordered H O two... All those chemists had potassium in their bodies. The first two were OK, the third was OK2.
Maintaining our family swimming pool as a kid taught me a little rule for remembering the order for mixing water and acid: You put the acid in the swimming pool, not the swimming pool in the acid.
I just remember Triple A.
Always
Add
Acid
My 8th grade chemistry teacher taught us the same only with water closet.
I love how he uses dog toys as molecule models
Hey , I think it is ' chemistry toys' .
@@rupasisanyal9967 stfu
Uhhh... no, it's the actual molecules. Jeez everyone is so thick.
@@MajorT0m it bothers me too brother
"Wow" is not a word you want coming from a chemist.
Lol that would make a nice Tshirt
Why
Yeah, we like things to do what we expect
😂 Unless it’s just changing color or temperature..
Exactly that. The entire video is a waste of time. Very poor explanation of everything presented. Just the current state of the world: we are what we are because of what we want us to be not because of what we deserve to be. Functional illiterates.
4:05 VITRIOLIC! Best part and helped me remember this for my classical chemistry test aha
Billy was a chemist's son, but now he is no more. What he thought was H2O was H2SO4
My high school chemistry teacher had this on the lab wall - what is it about kids named Billy and sulfuric acid?
Billy, finding life a bore
Drank some H2S04
Billy's father, an MD
Gave him CaCO3
Now he's neutralized, it's true
But he's full of CO2.
BenCubed Beautiful.
but sulfuric acid is a lot more viscous than water is
"That was a famos murderer in London, called Drake in the early 50's, that was famous for murdering his victims"
Really deep professor...
The thirsty young freshman
isn't thirsty any more.
What he thought
was H2O
was H2SO4.
The version I heard is :
Johnny was a Chemist son, but Johnny is no more. For what Johnny thought was H²0 was H²SO⁴
"it's quite hard, actually" Love that subtle British humour.
Hey, that joke belongs on the Viagra episode.
Watch the silicone episode 🤣
Pure adult entertainment with British twist😊
If i get smarter will my hair flair out too?
+Soviless99 Mine did.
Yes yes, your brain cells push your hair out
@@papaversomniferum5247 fr?
It happened to me
7:06 carboner
I was dehydrating glucose once and we used 16 mol H2SO4 and i spilt it on my finger. Bad move (fyi i have all 10 digits)
You can rinse that off in a hurry but it's going to get real warm as you do :(
Usally takes about 1 minute to start burning your flesh, so wash it off in at most 30 seconds
In a chemistry exam I had to write a whole page on acid. However my pen turned into a horse and the room turned into a waving rainbow-snowman.
Way back years and years ago when I was in high school, the chemistry teachers would do the reaction shown in this video of the Sulfuric Acid and sugar. And every year they would invariably forget how horribly bad it would smell and end up clearing out the entire lab.
As they taught us in freshman chem class, "Do as you oughta, add acid to water".
I remember the sulfuric acid in sugar experiment from 7th or 8th grade. What they don't mention in the video is how strong, terrible, and distinctive the smell is. Even with the fume hood on its highest setting and all the windows open, the stench would fill the entire building almost instantly. Everyone knew when that experiment was being demonstrated.
TheOriginalJphyper It is probably some smelly sulfur compound. Maybe sulfur dioxide.
Christopher Sacchi H2SO4 is really hard to boil. That's mostly sulphur dioxide and water vapors with a bit of sulphuric acid in them.
If you can smell it outside of the fume hood either the fume hood is not functioning properly or it is not being used properly.
"VITRIOLIC!!!" a fantastic word to be said by the professor.
I once got concentrated sulfuric acid on my finger (concentrated sulfuric acid is about 18M). It feels as if someone has this piece of glowing hot steel and pushes it right into your skin.
And by the way, the concentrated acid is indeed viscous and kinda looks like a syrup of sugar. This makes it very easy to pour it out of a bottle by the way, much easier than pouring water out of a bottle
I once had a distilled water bottle and I didn’t realise but the pipe was hanging over a very small sample of 12M H2SO4 and a couple of drops fell in. Just a couple of drops.
It didn’t spurt, but it started fuming 😂
"Like syrup of sugar that you sometimes put on your waffles or your bread or your cakes"
The prof is an alien 100%
Old school - He's my hero.
"it's quite hard actually" :)
Probably my favourite chem experiment ever, really fascinating to watch.
Back in high school, in chemistry class (Germany), the students learned the rhyme: "Erst das Wasser, dann die Säure, sonst geschieht das Ungeheure" / First the water, then the acid, otherwise the horrible happens. Yep, it sounds better in German.
I'm going to memorise that - thanks!
The dude looks like a legitimate stereotypical scientist
I've seen this reaction many times now and I can't help but wonder if that carbon foam produced has any noteworthy structural properties.
I also wonder what that reaction would look like.. in vacuum :-)
hboy007 I think you mean in zero gravity, not vacuum. same thought came to me. the point is that the weight of the carbon column is pressing on its lower layers and that might hinder the physical formulation of the column.
@@shadyradwan261 Time to send an experiment into orbit.
temperatature probe is thinking to itself: i did not sign up for this...
Thank you very much for made you this video 🙏🙏
this guy is a hero.
i have a concentrated sulfuric acid burn on my right arm, i pippetted some on me by accident, went through my labcoat and onto my bare arm, its a horrible scar now, doesn't look like it'll leave.
I've used sulfuric acid in high school chemistry labs before, but it was super dilute (Like 0.1 or 0.2 mol/L). However, I have used 6M hydrochloric acid once.
Naveek Darkroom that's not dangerous stuff. H2SO4 is dangerous only when concentrated because of its exhotermic properties. HCl is not really dangerous at all, just irritating.
There are solvation effects at work here. Water is polar (the O atom is partially negatively charged and the H atoms partially positively charged), which means that it interacts strongly with ions. When H2SO4 is added to water the reaction H2SO4(l) + 2H2O(l) ---> 2H3O(+)(aq) + SO4(2-)(aq) occurs. The (aq) means that the charged ions are completely surrounded by polar water molecules (forms something called a solvation shell) which releases energy as heat, as this interaction is a type of bonding
When an acid is dissolved in water, an equilibrium is established for (example) HCl (reversible) H+ + Cl-
For stronger acids the equilibrium lies more to the right (as acids donate H+). So a pure acid that is not in a solution is a compound, but when it is in solution the acid is mainly ions.
i worked for a while in a school as a lab technician, on a temporary basis. one day, the chem labs ran out of sulphuric acid and i was asked to dilute from stock. in order to do it right, it took a load of dilutions because all we had in was 24M - which is (like the Professor) says - this really vitriolic treacle. spread that on your bread, and it'll eat the bread, the knife, the plate, the table and your leg. after which it will eat whatever's below you for dessert.
strong stuff, it is.
I have seen 95% H2SO4. It was the consistency and color of a light honey. When we tried to put some into a bottle of water to do a test on it, the drop skittered around on the top of the water and tried to jump out. And for the record sulfuric acid burns hurt! Even if it is just a tiny drop.
@GRAHAMAUS Sulfur is an alternative spelling for Sulphur.
The two are interchangable.
I guess it depends on whether or not your country uses the British spelling of most words, or the American (United States) spelling, or some mixture or the two.
When I did chemistry classes in university, we were told never to pour water into acid, but never why... glad to learn why now.
@ThePyroProduction Notice all the bubbles in the carbon. The sulfuric acid removes the water but it creates a lot of steam. The steam makes millions of holes in the carbon so it's not dense like a charcoal briquette. By weight it is less than the original sugar + acid, but less dense.
I had some spill on my arm...
Just a couple drops.
As I started to walk to the sink to wash it off I noticed it was already starting to hurt.
I looked down and saw that my skin was bubbling in those areas.
I still have some small scars.
I was trying to reduce a chloride in a stream of hydrogen which was dried by sulphuric acid in a dreschel bottle. My mistake was that the zinc I was dissolving to generate hydrogen had manganese dioxide attached to it because the zinc came from batteries. Therefore chlorine was also generated along with the hydrogen. I was wondering about the chlorine smell when the dreschel bottle top exploded spraying the car behind me with sulphuric acid. I was wearing goggles.
I quickly hosed the car and avoided damage but when I finished cleaning up I saw the tube from the dreschel bottle resting on the roof of the car and the acid had eaten down to the metal. What to do? It was white so I put house paint on it.
This worked for a year until the house paint changed colour and my father asked me about it.
As a side note I did put a small ball of steel wool in the tube at the end that was exhausting hydrogen and it had ignited but the steel wool prevented the flame from travelling back.
I remember from my high school chemistry class: "Pouring the acid into the water, is doing what you oughtta."
The rule of adding acid to water is only necessary for concentrated phosphoric acid, concentrated sulfuric acid and concentrated perchloric acid. You can safely add water to concentrated hydrochloric acid or nitric acid.
So.. where does the sulfur go in that reaction?
you guys should do a video on superacids, specifically how powerful fluoroantimonic acid is compared to sulfuric acid! there's not a lot online that I can find about it but it's so interesting.
From a very old chemistry text book:
''Here lies Gillian, still and placid,
She added water to the acid!
Clever Jane did what she ought'er,
She added acid to the water.''
Deborah Kays! I teach my students, if you spit into acid, it spits back, hence always add acid to water. Also remember alphabetical order A to W, not W to A
Haigh used metal drums and not a bathtub. In addition, remains were found in the sludge he dumped into the yard outside his workshop.
There is a Danish rhyme about sulphuric acid:
Jeg har en onkel, Theodor, Jeg har ham ikke mere,
For han tog fejl af H2O og H2SO4.
I have an uncle, Theodore, I have him no-more,
'cause he mistook for H2O H2SO4
4 is pronounced somewhat like "fehre" (spelled "fire").
What was the molarity of the Sulfiric acid that was combined with the sugar?
@DannyNHansen I've performed this demonstration many times at school in front of classes. As long as you are an experienced chemist and the reaction is properly risk assessed there nothing unsuitable about it. Once the carbon is cooled the remaining acid can be washed out and the carbon is safe to handle.
I might meet this dude this year if I get into Nottingham. Wow.
Acid into water: You're doing what you oughta
Water into acid: You might get blasted
I'm a plumber and we use Sulfuric Acid for drain cleaning when we see a slow drain.
The most fascinating acid that I can think of is hydrofluoric acid. It is a weak acid, yet it can dissolve glass, something that even strong acids, such as sulfuric acid, cannot do. Maybe you can do a demonstration with hydrofluoric acid.
thank you professors for giving me this knowledge thanks for this kind act :) love you
One of the first things I noted as an early student in chemistry how many processes used H2SO4 to precipitate compounds from solution. Now we know how.
The carbon reminds me of the black snakes on the 4th of July as a kid. Pretty fascinating thing for a little to see. 😊
I explained the mechanism that you were referring to. I didn't disagree with your explanation. I simply explained why what you said occurred... occurred.
Why? Well, it's important for people to know. Do you consider half baked information to be something people should hear about a dangerous substance, or should they hear it in completion?
@ThePyroProduction Because of the structure it takes after you remove the water molecule. Remember, Carbon can be in many different bond structures.
Hello Sir, I'm Prachi Mishra. I'm biggest fan of you. I have a question.. How do we purify the h2SO4?? How do we eliminate Nitrate from the H2SO4?? Can you suggest anything to me it's my humble request please reply Sir..
There's a poster in my chemistry classroom... "Do as you otter, as acid to water."
My teachers have modernized. Whenever I tell them I've missed something important, their reaction is SULFURIC!
I just remembered a chemistry rhyme.
Johnny was a chemist's son but Johnny is no more, for what he thought was H2O was H2SO4.
Same scale as making Caramel and forgetting that you're cooking it and burns on an advanced level
Two chemists walk into a bar. One says "I'll have H2O." The other says "I'll have H2O, too." and dies.
Ironically enough, you can buy it pretty easily as a drain cleaner.
In the german language there is a memory hook every chemist knows: "Zuerst das Wasser dann die Säure, sonst geschieht das Ungeheure."
This means: "First the water then the acid otherwise something bad happens."
I used to live in Nottingham but I moved away from the uni but I still live in Nottinghamshire
How difficult would it be to make eutectic steel using sulfuric acid and heat?
because of you, now that is all I will ever see when watching that demonstration :)
Chemistry is the best science subject
Their is not a best or worst in the sciences because they are all useful in different areas.
The Whitest Gamer You Know Not the best but chemistry is usually considered to be the 'core of science'.
The Whitest Gamer You Know Nah... The best is Biology.
Farhan Ahmed Sodiumhyride?
Farhan Ahmed NaH
The pure sulfuric acid is not dark brown, it is the stabilizers and colorants added to it to make it look dangerous and to lower the reactivity, so that your drain doesn't explode when it starts generating steam from water. I have a 2l bottle of 98.5% sulfuric acid, and indeed it is very pale yellow, and viscosity is something like sunflower oil, the ultra pure h2so4 is somewhere close to be completely transparent.
thumbs up for the reflection of brady in the fumehood shield at 0:22
My mind: "Ok, its just another presentation in front of the class, no big deal..."
My body: 7:02
We have an exception when empty Acid tanks are cleaned with water.
Neil laughing in the reflection of the fume hood.
What are the differences between the acids? E.g. Sulfuric vs hydrochloric vs nitric and why does each application require a specific acid?
lohphat H2SO4 has a high boiling point (337 °C). One major use is to make H3PO4, which is used as fertilizer. They put it with calcium phosphate bearing rock and boil off the H3PO4.
HNO3 is also used to make fertilizer like KNO3 and NH4NO3. KNO3 is used in gun powder and probably fireworks as well.
These acids have plenty of other uses as well of course.
lohphat Acids are all different chemicals, like the old guy in the video said sulfuric acid is H2SO4, and hydrochloric acid is HCl. That's a huge difference first of all, and they also act differently and can react differently with the same chemical. For example, our stomach acid is hydrochloric acid. We don't want to use fluroantimonic acid(THE STRONGEST), which is *really* dangerous and will rip through your body and eat the floor for a long time until someone puts it in a teflon container. Like louis said, they can react to create useful things, like ferric chloride is often used in electronics companies to remove copper from a board to make a printed circuit board because it reacts with copper but not plastic. If you use some other acid, you may end up with but not limited to: explosions, board completely being eaten, nothing, or a chemical spill.
I am incredibly intelligent actually. My initial comment wasn't supposed to be a fountain of knowledge just some basic ideas about it and a comment relevant to the show. I read your first comment laughed and said this should be fun and Ill be completely honest you provided greater than I had ever hoped. Your one track mind has made it incredibly easy to lead you around you are really stubborn though and tend to talk in complete circles. and Im not even hitting the character limit deal with it.
Back in the 1960s there was a commercial product sold for cleaning very clogged drains, it was nearly pure H2SO4, the stuff was quite viscous like pancake syrup.
I believe it was banned because it was quite dangerous.
I forget the name though, but "Clout" comes to mind.
Michael Clark it probably was azeothropic H2SO4 (98%). Or even more probably 90-95%. 100% H2SO4 exists in equilibrium with SO3 so it's really really hygroscopic, not something that you can easily store in your house.
@Cellogamer
That's Hyrdrochloric acid, not Sulfuric acid. Most sugars are broken down into glucose and galactose in your intestines with the help of enzymes. Amylase is a example of one of these enzymes.
very superb explaination as im chemistry student its more usefull for me thanx
Are there any Periodic videos on Nitric acid or fuming nitric acid?
A little question: S has covalence 2, how can it bond to two -OH groups and two -O groups, and what are the two -O groups bonded to if at all?
I'm in fifth grade of "gymnasium" now. If you could make me understand this I'd be really glad.
The black column of elemental carbon from sugar and H2SO4 is the fact that the H2SO4 is removing the hydroxyl groups from the sugar.
I guess I see your point, but the fact that 1. I've never seen sic in parentheses before 2. wikipedia isn't always reliable and 3. where I first found out about sic didn't mention anything about parentheses. At least I don't think. It was a long time ago. I remember seeing it in my English class in brackets, however, so maybe by saying "traditional," it meant old-fashioned rather than the usual everyone-else-but-America
6:53 Is that the voice of Neil I can hear in the background laughing and saying, "It's quite nice that"?
We did this sugar and sulfuric acid experiment in our chemistry class!
Our fumerator sucks though
how hard was the carbon mad in that experiment?
i think of using this reaction to fill a mold and make a shape that
i need made in carbon.
usually i have to carve those shapes out of expensive blocks of graphite,
but if i can get cheap carbon in an exact shape - evem if a little brittle,
i'd like it better.
so how hard was it?
can you carve it with a spoon?
when you poke your finger at it - does it break?
In my college chem class lab was a big sign "do as you otta,add acid to water"
I love when the professor uses dog toys as visual aids.
I just saw 0:48 to 0:57 in an NBC news report about sulfuric acid attacks in Chicago!
I've noticed that this experiment is always done in beakers with straight (upright) sides. If this was done in a container with a tapered mouth, do I take it that there would be dangerous complications?
is there a temperature change in the solvent when any solute is added?
Bruce Liu I bet that depends highly on the solute/solvent, but generally speaking solutes dissolve in solvents because it's is energetically favourable to be in solution. This trend towards a more stable entropic state often releases energy and results in exothermic release of energy (though not always!) so I feel you're probably right in you're assumption. would love a video comparing some solvation experiments with thermal probe!
An interesting one is urea in water. It's endothermic, the solution gets quite cold when mixed.
try using a combination of vinegar sulfuric acid and some sugar with hydrogen peroxide and see what happens when you stir it up and how hot it gets
When you dehydrate the sugar with the acid, are you left with elemental carbon? Or is it an isotrope
elemental carbon (and everything else) has different isotopes.
so in fact, you end up with some isotopes of elemental carbon.
the difference between isotopes is the number of neutrons, but all of them are actually elemental
It reacts to Carbon in solid form , and water in gas state and some kind of molecule with sulfur also in gas state.
What about lead acid batteries? The batteries at my work are 6 volt deep cycle batteries that we have to add distilled water too. Is it safe to do because they don’t have pure sulfuric acid in them?
I want to try the sugar/acid reaction at home. Yes, I understand the risks and would take the proper precautions. What I want to know is whether the carbon column is acidic. I noticed that the acid in the beaker disappeared when the column grew. Can I assume it is trapped within the column?
My teacher called this demonstration "Bride's first biscuit"
Fantastic yet again.
Is there any use for carbon made from dehydrated sugar made using this method?
I thought only diamond needed pressure. Hmm. I'll take you;re word for it, haven't done organic chemistry yet in school.
What the professor says in 2:06 is that concentrated sulfuric acid is so dangerous that to use dilute sulfuric acid, you don't dilute the sulfuric acid. You acidify the water.