I'm at my 3rd year in uni and this was really useful for some simple notation, after doing your examples I'm confident I can handle any exam question on this!
Thank you so much for sharing this video. Your video has fixed the concept of how to write "cell notations" in my brain perfectly! Thank you again, the video is very helpful.
What happened to the coefficient 2 from Fe3+? How do you write out the equation when looking at the shorthand and how do you know what has coefficients?
In the last example, why is MnO4- closest to the middle on the right hand side of the cell notation. Wouldn't it be Mn2+ because that's the most oxidised.
May I ask why the coefficients are not included in cell notation? I've seen some examples (not many) where ppl actually put them in, is there a reason for that?
Sometimes people will put concentrations in cell notation: 0.1 M Fe(3+)(aq) | Fe(s) || Cu(s) | 1.2 M Cu(2+)(aq) But coefficients ... no, I've never seen that.
Hello, I have a question. I understand all these equations and Stuff but what keeps the electrons from flowing through the salt bridge? Why do they flow through the wire instead?
I'm hoping someone who knows more will chime in, but here is how I think of it. The electron will move from high potential to low potential, with the wire acting as the easiest path. While an electron could cross the salt bridge in theory, it will take the path of the wire.
I have a question :|, what if one of our half equations has a group 1 metal. Would it not be idiotic to list the group 1 metal as an electrode? We should be listing Platinum instead, right?
For textbook questions: I don't have an answer for that. Most textbooks treat them both as inert electrodes so you can just choose whichever one you want. For the real world: Platinum is so expensive you'd never use it in a cell like this one.
He got me laughing when he said"I have written out the half reactions for you, so you don't have to panic"
I'm at my 3rd year in uni and this was really useful for some simple notation, after doing your examples I'm confident I can handle any exam question on this!
Dude, you are an outstanding teacher! I'd send you flowers if i could!
3:00 SAAAALT BRIIDGE
lol
You might as well be my professor. Thanks so much. This was straight to the point- love it!
Why am I discovering your channel just now? You are THE BEST chemistry teacher EVER!!!!
wether they were opposite or not, you gave a fresh review on the concepts. if you understand the concepts then you can figure the rest out. thanks.
You are so funny, I did panic anyway by looking at the half-reactions. LOL
Thank you so much for sharing this video. Your video has fixed the concept of how to write "cell notations" in my brain perfectly! Thank you again, the video is very helpful.
Thanku so much dude
Appreciated 👌
in the last example how can it be graphite anode?? it has mercurous ions in it right? so it must have mercurous anode!
U teach soooo well
Wish u were my chemistry professor
OMG I love you. You're a God send. Thank you so much. That last example really cleared things up for me.
write the cell reactions and electrode half-reactions for the following cells: Cd|CdCl2||HNO3|H2 AND Zn|ZnSO4||AgNO3|Ag
What happened to the coefficient 2 from Fe3+? How do you write out the equation when looking at the shorthand and how do you know what has coefficients?
i have no words to thank you
but still thank you
Which order do you put stuff in when you have more than one reactant at either electrode?
Yeah, if you could take me electro exam for me, that'd be great :) :) :) Awesome!!!
What if I have a question relating to the way a salt bridge should be written, should it be 2 straight vertical bars or 2 slanted vertical lines?
straight
Thank you for your lucid explanation.
why did you choose solid carbon? Is there a specific reason or can we choose anything that is solid when there is no electrode material?
In the last example, why is MnO4- closest to the middle on the right hand side of the cell notation. Wouldn't it be Mn2+ because that's the most oxidised.
In the last example, why isn't Mn2+ in the cell notation. I also noticed you included H+, but not H20. Can you explain this?
He did include Mn2+, and he said we don't include water because that's what makes it aqueous.
May I ask why the coefficients are not included in cell notation? I've seen some examples (not many) where ppl actually put them in, is there a reason for that?
Sometimes people will put concentrations in cell notation:
0.1 M Fe(3+)(aq) | Fe(s) || Cu(s) | 1.2 M Cu(2+)(aq)
But coefficients ... no, I've never seen that.
The reason why is that it's redundant information. From the chemical formulas given in the cell notation, someone could just balance it themselves.
thank you, really helped out a lot. Keep it up :D
thnx it helped me a lot!!! thnku very much
Great Video and Explanations, however how would I then draw a diagram of the voltaic cells including the electron flow, ion flow and it's components?
Hello, I have a question. I understand all these equations and Stuff but what keeps the electrons from flowing through the salt bridge? Why do they flow through the wire instead?
I'm hoping someone who knows more will chime in, but here is how I think of it. The electron will move from high potential to low potential, with the wire acting as the easiest path. While an electron could cross the salt bridge in theory, it will take the path of the wire.
I'm 6 years late but... Only ions can flow through the electrolyte. Electrons always flow through the metal.
Really helped. One thing though. Graphite is not solid copper....
Thanks, good video made it easy to learn!
you teach well.
btw i used to get confused in this thing.
He said Graphite was solid *Carbon* though, I believe that's correct?
I have a question :|, what if one of our half equations has a group 1 metal. Would it not be idiotic to list the group 1 metal as an electrode? We should be listing Platinum instead, right?
THANKS A LOT ❤ i was so confused
Thank u so much!!! This video helped a lot
what if we have gaseous species as well?
Can you explain how you figure out the half reaction for MnO4 to include H+ and the H2O
My professor said you can use a liquid as an electrode, so would it be ok to use H2O as the electrode instead of graphite?
+SoulSina11 Water is mixed with the solution and your electrode will disappear. You can use mercury.
+Kevin Tee you found me xD
+Kevin Tee nvm you're a different Kevin Tee
haha
How and when will you know that you've got to use C(s) instead of Pt, and vice versa??
For textbook questions: I don't have an answer for that. Most textbooks treat them both as inert electrodes so you can just choose whichever one you want.
For the real world: Platinum is so expensive you'd never use it in a cell like this one.
@@chemistNATE Thank you, now I understand it much better 😃
"Thats the way its done" 4:40 worst teacher ever 0/5 would fail this chem final tomorrow
You don't separate aq and l by a line and you may have to separate two liquids with a phase boundary like oil and water..
no he said you can use nonreactive cathode e.g graphite(solid carbon) OR the expensive copper
carborn can be solid(graphide) and can also be in a gas state
How about examples of chemicals without electrons. Where you need to find the electron for example is Al(NO3)^3
thanks sooo much , u make it easy
What is another way to write this reaction
Thank you so much 😊
Really helped.. Thanks...
ty so much sir.!😇
Thx so much 🌸👌
thanx....really helped me alot... :)
Thank you so much!!
Thank you❤️
C is carbon, not copper...
+Rebecca Harvey
He said Graphite is solid Carbon.
Thanks buddy😘
It's a little dull, making it hard to look. a little more brightness/lighting, should help. thankyou.
ugh thank you so much!!!
i did really panic when I saw that long reaction.
great review! =)
i like ur voice
Thank you
Thanks so much
Thank you!!!
thanksss it wax helpful
God bless you
cheers mate
Right and left are subjective.
Those from india and still understands the whole video hit like👇👇👇
True! That's because he have the science "enthusiasm" in his voice!
thanks man muah!!!!
Tysm
Who else got a test tomorrow
goooooooooooooooooooood
Gr8 but you look a bit tense today?😋
C is carbon not copper cu
my book says the opposite, cathode on the left, and anode on the right.
Chemistry is stupid physics is best
thanks so much..