Electrolysis of Water - Electrochemistry
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- เผยแพร่เมื่อ 30 มิ.ย. 2024
- This chemistry video tutorial provides a basic introduction into the electrolysis of water which splits H2O into H2 (hydrogen has) and O2 (oxygen gas). Oxygen gas is produced at the anode and hydrogen gas is produced at the cathode. Electrons flow from the anode to the cathode. Oxidation always occurs at the anode and reduction occurs at the cathode.
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if I accomplish anything academically in life I will owe a solid amount to you and your videos, thank you
Like I will never forget him seriously
Bro you are the best, i would suggest a channel rename because you are basically explaining everything, you don’t want people skipping your channel because of a misleading name! Cheers!
Ya that's why I never watched him until taking Organic Chemistry.
69 likes nice
@@WinkThatCouture hello
Ikr!
His name is iconic now though
Thank you for helping me with my science fair.
Thank you so much for covering so many topics. It was hard to find a video specifically on the electrolysis of water.
It is still hard after 3 years to find the video on electrolysis of water
A rare complete explanation of water electrolysis.
that was a thumbs up, this is awesome. i love the video and the explanation
Thanks JG. This video is a great explanation to understand Electrolysis.
Btw, the standard electrode potential for 4OH- >> O2 +2H2O +4e- is the positive 0.4V.
The electromotive force (E0) for electrolysis is -1.23 V which is calculated by (-0.83) - (+0.4). E(Red) - E(Ox).
Looks you add (-0.83)V and (-0.4)V to get -1.23V but I think (+0.4)V is correct.
nope, +0.4 V is not correct. I think he reversed that equation with +0.4 V to get - 0.4 V.
Great video. Explained it perfectly
I can't thank you anymore🤗💥...you're more than a gem
Am always happy to watch your vedio. Have learnt so much from you thank you so much
Hi could you explain the plasma electrolysis of water as well? I could not find enough information on that. Thanks!
you sir… are the reason why humanity will live on
Good work really helpful ♥️
This guy helped me so much.
yo shoutout to man, you make so many videos
Great stuff!
Nobody has explained this better. :)
I understood carefully.
Thanks.
Student from iran.
I don’t think you mentioned the concentration build up of heavy water at the bottom. It’s small but still worth mentioning.
3:05 should be “electrolytical cell” rather than “electrochemical”, but other than that this is the best explanations of electrolysis I’ve seen! Thanks!
Very brilliant video. Thanks.
I just don't know how to thank you again 🤗💥
New name suggestion: The organic teacher
Because at this point youve gotten me through way more than organic chem
Thank you, I hope you have a good day too!
Thanks, now I can finally fuel my rocket!
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@@vyomkapur3788 dude saying that doesn't make you cool
Are we all seriously here for some crazy science experiment
It only works on water
@@watyadoing what do you mean?
Learnt more in 13 min than I did in 6 classes. Fucking good video
you are the best of all
Nice Video. Quick correction at 2:34 - should be 2H2O + 2e- -> H2 + 2OH-
Zach Kelly where does the OH from?
Very helpful video thank u
Good explanation
Can you kindly explain if we use NaHCO3 instead NaOH? I do want u to help. Thank you
youre my lifesaver
A education program should give you accreditation!! Better than my college professors!
nicely done
Can you explain me more why oxidation pair of OH-/O2=-0.43v became oxidize and H2O/HE=-0.82 became reduced?
Is it possible to find self potential list for all elements in my old chemistry book? Or somewhere on internet ?
Good video . thank you
In case if u r wondering about the equation at anode:
OH^- = OH + electron
OH^- = OH + electron
OH^- = OH + electron
OH^- = OH + electron
There fore the overal equation at Anode is
4OH^- = 2H2O + O2 + 4electrons
Where do you get 4 OH^- from?
thank you very much
what is this apps name that ur using to make us understand electrolysis i wana download it
tell me
We can’t even thank the ACTUAL NAME of the owner of this Channel! but thankyou anyway ✨ I salute you, JG(?) perhaps. i
Julio Gonzales
That was pefect video
Ok so I'm seeing the Mr.JG is only crossing out elements and electrons which are in the different sides of the arrow. So is that some kind of rule in that we can only cross out stuff is they are present in both half reactions if we need a full reaction?
U r just the best 😘
So after electrolysis will some sodium metal be seen on the cathode?
Thankyou 🥺🙏🏻
Awesome 🎉🎉🎉
What is the name of the application used to "black board write"?
Very good 👍 👏 👌
So, the most easily oxidized species reacts at the cathode? That's where I'm confused
Cathode = Reduction both start with consonant. Anode = Oxidation, both wowels. Thats how I still remember it after recieving my diplome 19 years ago. ( I'm a chemist, but work on completely other field, nothing with electrochemistry...)
@@gergokovacs3332 Red cat and An ox ( the animal) Is how I remember
What is the best electrode and what to do to increase the rate of reaction
add sodium hydroxide
Nickel {catalyst}
10:44, 2H2O --> O2 + 2H2
but yes, he has corrected it.
the standard potential of anodic reaction is greater than cathodic rxn then it should be then reduction not oxidation like cu and zn zn have -0.76 E and cu is 0.34 E so reduction of cu occurs. then why in case of water the less E value is reduction. can u plx explain it
How can i know that a metel should be written at the cathode or anode?
is it the current or the voltage that breaks the bonds, i was thinking maybe you could have two or more cathodes connected in a series or parallel circuit 🤔🤷♂️🙇♂️
good video but you miss to explain why eletrode wear out in this process
So what experiments can one do to prove that gases are originating from the water and not the electrodes or electrolyte?
Which app are you using for the writing reply pls
Thanks a lot!!!
We need to separate hydrogen from oxygen in the air
Heatwaves are partially from vapour build up in the air
Best period
Thanks
nice vid
How is the reaction described in the video an example of an oxidation/reduction reaction?
I know this is old but when you give away, or gain electrons, it is an oxidation/reduction reaction. In the video example, Hydroxide is oxidized because it gives away 4 electrons.
i used to do this as a kid with jar with a nail & a carbon rod from a dead battery with salt water
thank you, I want to ask about hydrogen at the cathode ore anode because I am confused
isn't the cathode supposed to be the positive side and anode the negative?
since you started with NaOH doesnt that mean that reaction that you said was not likely to happen already happened?
I think he was talking about removing OH from the water
After Electrolysis, what happens to the water. they change the water in a particular interval.
Teach me more I need this on our research
ano research nyo???
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I’m a bit confuse, hydrogen has reduction potential = 0. Should it be Hydrogen at cathode instead of H2O?
H20 has more reduction potential than H2
Dods it produce pure oxygen at the anode.
Im confused by the + 4 electron
2:14
In electrolysis you will get only pure elements as the products .
How much time does it take ???
Which board you use
Plz reply
Lets say you wanted the to somehow use the h2 gas for something. how would you collect it?
@@timno9804 and I'd assume you filter it by putting the mixture in conditions that would cause the other components to react with something?
I am not sure about the reaction at cathode, Shouldn't it be 4 H2O + 4e- → 2H2 + 4OH- ?
correct, numbers of H and O should be the same, as well as the charges on both side of so called " half- reactions". If you sum up anode + cathode xou get decomposition of water to H2 and 1/2 O2.
Bro you didn't uploaded kolbe's electrolysis reaction in the channel yet....
Next video, 'How to store hydrogen.'
Plz tell me , which is the best catalyst to do that ? Can i use sodium bicarbonate?
After continue watching i found it's similar to that i am looking for ? But still wanna know about baking powder ?
Use salt
i cnat quite seem to understand why is it exactly the otherway around in a electromachnetic cell ( cathode is postive anode negative)
who knows what program was used for this tutorial clip? is it the same paint program?
You can find it here:
th-cam.com/video/rBSuMooMYrs/w-d-xo.html
12:44 I disagree. The reaction does not occur unless the activation energy is provided. The bonds of the Hydrogen molecule, H2, and Oxygen molecule O2 must first be broken before they are free to combine. The molecules will not slowly accumulate energy until there is enough to break the bonds.
Wayne Y. Adams
B.S. Chemistry
M.S. Physics
If you are open to doing personal tutoring please let me know. I have a 6 week organic chemistry course coming up and I know its going to be extremely difficult to do a class like that in 6 weeks. I am willing to pay. Thanks in advance
What happens when you run out of water? There is just NaOH left, and it starts to form elemental Na?
Yeah, that's a really good question. If all the water is lost in the processes, what happens to the sodium?
H202 is peroxide, and h20 is water right?
Show me how to split water into H & O without using a electrolyte which contains H & O.
Good
1:11 I have read that an acid is used in electrolysis and NaOH is a base. So will it work??
Alkaline solutions can also work as they can conduct electricity
Oxidation and reduction
how to increase the rate of reaction, what will make the anode dissolve quickly.
@Archana Joshi how many volts, how long will it take. it is just a small fun experiment
sir i think the anode should be on the other side
and the cathode on the other
or maybe its how you draw the battery
2H2O + 4 e- is H2+ 2OH (not 4 OH) . Am I right?
yes, except 2e not 4e on the LHS
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I can't understand the role of the electrolyte. I mean it is the water that splits into the components. Why the movement of the electrolyte "helps" electrolysis? I mean what if we haven't any electrolyte? At the cathode water molecules could still take electrons and at the anode water molecules could still give electrons.
How does 2h gives off for storage
But why the long side for positive?
Why does the less reactive one get discharged on the cathode?
it’s been a year💀 but the more reactive a metal is the more it prefers to stay as an ion and not get discharged
2:37 There are mistake , instead 2H2O ,there should be 4H2O. One more mistake at 10:44 instead 2H2O ,should be 2H2
He didn't just balanced it, not a mistake