Rate of Reaction of Sodium Thiosulfate and Hydrochloric Acid
ฝัง
- เผยแพร่เมื่อ 8 ก.ย. 2024
- Vary the concentrations of reactants and measure the time it takes for product to appear.
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I have a lab report for tomorrow and this was very helpful.
who is here because of their teacher sending them here for a task
edit: damm i never got this many likes
Yeah, im doing an assignment.
holy shitz how do you know 0-0
@@jyahhh1694 oh hey i know you
@@rania9910 AHAHAHAHAHA
Wow , we're all here
I teach at UVM in Mexico and this is a great practice to get the relationship between concentration and reaction rate
Mate, there's something on your shoulder
jake dawson i think that is her pet. i dunno what kind of animal though
@Adriano Seresi my fuckin god. That Chem pun
lol.. It was a fake rat..
people who work in the lab will get it
@@rachwang3483 r/gatekeeping
@@rachwang3483 eeet's not a rrrrrrrrrrrat !! Eeet's a hhhhhhhhamster!!
Half of the people in this chemistry video talk about a prop on her shoulders.
I mixed 4.3 g of sodium thoisulfate in 200 mL of water and then used 1.2 M HCl. I reacted 30 mL of the thiosulfate with 20 mL of acid in a small beaker and the reaction took about 1 minute for the "x" to disappear. Then I doubled the mass of thoisulfate (8.6 grams in 200 mL) and ran the reaction again. This time it took about 30 seconds for the 'x' to disappear. It worked really well for me.
She has a mole on her shoulder (chemistry genius)
I love her lab coat! And her pet mole. That was brilliant!
Thanks so much. This really helped with finding the right starting points for this reaction as well as providing a simple technique for varying the concentration. But could you please tell us what molarity of HCl you are using.
“Eacid”
I have chemistry moderation tomorrow so I'm cramming this
This should say that you use 5mL of 2M HCl ...
It's so cool that science is so Universal!
Why did she change the amount of sodiumthiosulfate as opposed to changing the amount of hydrochloric acid? If the amount of sodiumthiosulfate is varied, won't you end up with two variables? Adding more sodiumthiosulfate will result in more sulfur formed (so a thicker cloud) and will simultaneously result in a faster reaction.
It seems like you answer your own question in your last sentence....
Yes u are correct the aim of this is to see how changing the sodium thiosulphate will affect the rate of reaction between sodium thiosulphate and the acid
Under which condition of temperature does the cross take
A, the shortest time to disappear
B, the longest time to disappear
I have a question about this class. What is on her shoulder?
It's a mole
Very nice and informative experiment..thank you!
what concentration of HCl did she use?
I don't understand how you made those graphs. How do you possibly know what the concentration at a given time is? I tried this experiment in my chemistry course, but the experiment doesn't show how you got the data you did.
very helpful for my practical tomorrow! Thanks A Million!
Darshan Naidoo how did your practical go 6 years ago?
Lol vol directly propotional to rate and rate inverselt propotional to time
10 years ago haha
Thank you! This has helped me for my science coursework! :)
Very nice demonstration. And a smelly one, usually. However, how come the dependence [thiosulphate] vs 1/time is linear?! If the reaction is considered to be first order, then linear is ln[thiosulphate] vs time. [thiosulphate] vs 1/time is not even close to linear. Am I missing something?
very useful ....thnx fr the video
Hi I was wondering how the concentration affect the rate of reaction
Seriously, what is on her shoulder and why is it there?
Sherlock H it’s 6.02x10 to the 23
@@ruthiethemagmacube5390 lmao
Thanks a lot from egypt
What is the theoretical value of k in this reaction???
I have a question. How does final concentration is measured?. Thank you :D
I'm confused on what the controlled variables are in the experiment, for example why wasn't the amount of water kept the same.
I always wanted to tiedye my coat. she is awesome!
Whatever is in her shoulder is a mole.. Not the animal but the measurement of the number of atoms, the mass of atoms and also the volume of atoms....
Thank you soo much this is very useful for me 🤗
Thank you so much
This is gonna help me
Thank you so much this was very helpful
I wish to have so nice coat, thees colors, love it :)
thanks, for this video very useful.
pls do the experiment regarding changes occured mixing hypo & sulphuric acid
Thanks ma'am
does volume and concentration of HCl affects concentration of thiosulphate???????
Is the hypothesis the higher the concentration the faster the reaction rate correct?
Right...
IV and DV are plotted wrongly on the axis
anyone can tell me the rate law?
Did you pour potassium (VII) manganate on your lab coat?
hi does anyone know how to make the sodium thiosulfate solution? I kinda need an answer within the next few days because I have to come up with an idea asap :)
May i know what is the aim or objective for this experiment? Because i need to do a lab report for my studies
wow, this was very helpful! thanks!
bro lemme know real quick if you can do my research investigation. scientific question is does temperature and concentration have an effect of the rate of reaction (sodium thiosulphate and hydrochloric acid)
Well i have Ligma Now , thanks alot jane
Thank you very much!!! Your video was very useful for me...
Can someone help with the independent and dependent variable for this experiment please
The independent variable is the concentration of the Sodium Thiosulphate since that is what is changing and the dependent variable is what you are measuring and for this instance, it will be the reaction rate (in seconds). Hope this helped and sorry for the delay.
how much na2s2o3 does she take for every beaker
The graphs are wrong. In this case the time is the dependant variable should be placed on y axis.
Nope. The graphs are representing the change in concentration with time within a single experiment. They are not showing how different initial concentrations affect the time needed to reach that point when the X disappears. Well, at least c=f(t). Because c=f(1/t) is... I have no idea where did this come from. It is non-sense. For first order reaction, linear is the dependence ln(c) = f(t).
@@marcokostadinov73 She Is acting on the concentration and misure the time associate with each concentration. The variable that she is acting on is concentration so is the independent variable. Time is what she measure so it depends on the the concentration she is measuring
@@alexanderbontempo554 You are correct. But she doesn't say that the graph represents her experiment (and in fact, it does not). She says "if we plot concentration vs time", not mentioning "time needed for the X to disappear" or anything else linking it to her data. We may well be both correct. :) Anyway, we are arguing about something of importance slightly higher than zero.
@@marcokostadinov73 in practice it doesn't have any impact. But being for educational porpose i would be more rigorous, actually would be the perfect situation to explain how to do a graph. If was in some other circumstances I wouldn't mind. Just that.
Who can tell me how to calculate the concentration?? (4th column)
By using formula M1 V1 = M2 V2
Example 1st one
0.15 x 40 = M2 x 50
=0.12
does anyone know if this reaction is endothermic or exothermic?
She kinda looks like carol from the walking dead.
I have a quotion
What on her shoulder?
Take a chemical experiment that looks like magic, make it as boring and tedious as possible, and Voila! - you've put kids off science for life. Good work.
Good
Is that a.... mole on her shoulder??
wtf was on her shoulder
+Shakinah Shirin i think that's a turtle??
+Shriya Gupta it's a mole
It's a mole, my chemistry teacher has a shitload of moles in her classroom. Moles (not the animal) are the measurement of the number of atoms, the mass of the atoms, and the volume of the atoms.
your mother
AN Avogadro's constant
Mem, how can u find 0.15 moles/L
The molarity is given
In the Table, instead of H2O, isn't it supposed to be HCl?
I don't think so because I did this at school and water was used
can you tell me , which solution you are adding in to the beaker?
no
what is the molarity of HCl?
doesnt sodium thiosulphate + hydrochloric acid make sulphur+sodium chloride = water
20 dollar, love you long time
whats on her sholder
A mole of course - Avogadro's number etc.
Adam Turley It is too!
hey can anyone tell me what the controlled variables might be? i kinda need the answer within the next few hours though, so if nobody answers that's ok. Thank you for the video! I was off sick the day my class did the experiment so I couldn't see it. thanks!
love the Annabeth pfp!
Is sulfur the product that makes the mixture go cloudy?
Bubble Tun yes
What concentration of hydrochloric acid?
we did this with a concil flask
whats on ur shoulder??
what is the concentration of hcl ???
thanks ,it is good video.
i actually wanna die
why is this me
Please don't.
shoutout kay sir jake 😎
concentration vs time
and
concentration vs 1/time
*make sure correct amounts are used
why should I make sure to use the correct amounts?
What type of reaction is this?
I have to write the type of this reaction in my homeworks too
@@daqa9420
Same
i believe its a neutralization reaction
Chemistry is interesting
I love your lab coat 😅😅😅
ty :)
In this what is the color of sulphur
Yellow
Ugh here to learn something but that thing ohln her shoulder ruined it hahahaha WHY? And WHAT is that? Hahaha
is it possible to look at both concentration and temperature at the same time.
Cool
What was the concentration of the hydrochloric acid?
2 M
@@aliarashwan466 thanks
1/time wat is it??
It's a Mole....get it?
HER SHOLDER????!
1 mole on d lady's shoulder
hey its kyanada
kak itu yg dibahu apa
what on earth is on her shoulder? i think it is a black mouse.
a mole....
At 1:56 it says mole?
Nicole Biddle thats the concentration of the acid
anyone else not notice the mole until you read the comments?
2 mol
what is the aim of this experiment
to find the rate of reaction with different concentrations.
rishikesh (concentreation of hydrochloric acid.) When the concentration is increased the rate of reaction is quicker, meaning the cross dissapears quicker.
what the hell is on your shoulder? a moll? Telling you what to do?
How was the concentration of Na2S2O3 measured each time??
Can someone explain please?
Use the formula c1v1 = c2v2, where c1 is concentration before diluting and c2 is concentration after diluting (same for v). For example, in the second trial she used 40.0 mL of 0.15 mol/L stock solution and 10.0 mL of water to form 50.0 mL of diluted solution. The calculation would look like: (0.15 mol/L)(0.0400 L) = (0.0500 L)(c2). Solve for c2 and you get 0.12 mol/L, which is what she has written in her chart.
Synnefrenia Thanks for the explanation.
After all this would be the result