Is it reverse because the hydrogen loose an electron whereas in normal electrolysis the aim is to separate and so normally the hydrogen would already be an ion and the electrolysis would give it the electron it needs to have a full outer shell?

SIr, i have a question, if the electron is seperated from the Hydrogen Atom, wouldn't it be basically a proton, and if so, why is it moving towards the positive electrode and not sticking to the negative electrode. also, what cause the hydrogen atom to loose its electron at the negative anode, are we supplying any kind of energy to the negative anode. I really need to know, thank you

​@@wannabeadonis69 look im no expert but what do you mean the electron is essentially a proton? an electron is an electron regardless of whether it's been separated from anything or not. it doesnt change into a proton. the hydrogen atom becomes a positive ion because it has more protons than electron, but the ELECTRON doesn't become a proton..

​​@@wannabeadonis69 Hi, when a diatomic hydrogen molecule reaches the cell anode, it is ionised (I.e. its electrons are separated, resulting in two loose electrons and two Hydrogen ions (2H+ and 2e-). So yes, in essence the H ion is a proton, but usually appears diatomically (two protons together). This happens as the anode/cathode is actually a thin membrane. The anode side of that membrane is coated with platinum, or a similar material. Platinum is chosen as it is an effective catalyst for hydrogen excitation, and has sufficient "excitation energy" to cause hydrogen ionisation (I.e. release of the electron). Have a read into "hydrogen elctrocatalysis volcano.plots"). The Hydrogen ions are pushed through the membrane to the cathode side due to a pressure differential. The hydrogen gas is under higher pressure than the air/oxygen at the cathode side. The electron follows the electrical circuit amd is attracted to the cathode, due to the presence of positively charged hydrogen ions that have now emerged at the cathode side of the membrane, combining with oxygen to form water.

​@@BlindMonk93how they mantain constant pressure?

mood ngl

Same

Man same ;-;

Same

Because our teacher came from Ohio

day of the exam..

Hour before the exam…

@@JaydaJKey me too fr

@Alex College I like them tooo

same in 1hr now

Yess same, I am very much a visual learner so reading a textbook is not easy for me but these videos are great

Yea lol the guy in freesciecelessons has a really monotonous look, which just bores me.

@Ravexnite What

@Ravexnite Bro what 💀

Ah great, glad we could help Ahmed! 👍

Correct I think

THAT IS BECAUSE THE CATHODE IS NEGATIVE WRONG IN THE VIDEO

Oh thank you!

platinum - it is an inert transition metal

You're welcome!

Yeah

I'm pretty sure they swap for fuel cells. not sure why, just know that they do.

im the same i came to see if anyone else thought the same in the comments

fuel cell is a galvanic cell and in a galvanic cell anode has a negative charge while the cathode has a positive charge but in the case of electrolytic cells the anode has a positive charge and the cathode has a negative charge this change is bcz in electrolytic cells battery is used to provide electric current while In galvanic cells no battery is used and the elements are oxidized (lose electrons) on the anode so the electrons move from anode to cathode through the wire got it?

@@gulnaz9478 fuel cell is a galvanic cell and in a galvanic cell anode has a negative charge while the cathode has a positive charge but in the case of electrolytic cells the anode has a positive charge and the cathode has a negative charge this change is bcz in electrolytic cells battery is used to provide electric current while In galvanic cells no battery is used and the elements are oxidized (lose electrons) on the anode so the electrons move from anode to cathode through the wire got it?

KOH is in liquid state because for ions to gain or lose electrons it needs to be in molten or aqueous state

the catalyst is platinum!!

H² + OH- --> h²O + e- basically hydrogen gas reacts with the negative OH anion forming water however because OH carries a negative charge, it means it has an extra electron which has to be released hence water and electrons are the products.

what ive been able to garner is that in fuel cells the names switch

@@zainnajmi4848 why do they switch?

@@shamimmemon1280 because this is chemistry 🥲

@@shamimmemon1280 fuel cell is a galvanic cell and in a galvanic cell anode has a negative charge while the cathode has a positive charge but in the case of electrolytic cells the anode has a positive charge and the cathode has a negative charge this change is bcz in electrolytic cells battery is used to provide electric current while In galvanic cells no battery is used and the elements are oxidized (lose electrons) on the anode so the electrons move from anode to cathode through the wire got it?

That’s in electrolysis. When it’s redox the anode is negative and the cathode is positive. I do a level chem lol u can take it from me . U have to memorise that

Glad our video could help you out 👍

fuel cell is a galvanic cell and in a galvanic cell anode has a negative charge while the cathode has a positive charge but in the case of electrolytic cells the anode has a positive charge and the cathode has a negative charge this change is bcz in electrolytic cells battery is used to provide electric current while In galvanic cells no battery is used and the elements are oxidized (lose electrons) on the anode so the electrons move from anode to cathode through the wire got it?

in fuel cells the electrodes are flipped, in electrolysis the anode is positive but in fuel cells it’s negative

I am aware, that's why I said positive cathode

It gains oxygen to created H2O. As well as this it losses an electron to form the ion in the first place.

Ong

Hi, you can have both acid or alkaline fuel cells, but at GCSE they only do the ones that we cover in the video. At A-level you'll cover both types.

Bro the Exam is in less than an hope 😭

theyre reversed in fuel cells. so cathodes are positive and vice versa!

@@rapesquad I know that the cathode is positive. My question is how comes the H+ (positive ion) moves towards the POSITIVE electrode if like charges are supposed to repel?

@@subbhy3791 i see, well cathode temporarily switches off. during hydrogen moving to the elcyrode. more a-level stuff exams over now anyways! howd u find it?

@@rapesquad oh ok thanks. It was a good paper, some calculations resulted in some questionable values (0.021.. mol/dm^3, 60,000 dm^3) but concurred with what others got!

@@subbhy3791 yea lol it was fairly maths heavy. i got 60,000 too

Yh, I finished my igcse

Got grad 7 and 8 in everything

@@eliteds4200 man that's great

@@eliteds4200 im finishing in 4 days

@@hollowknightshade4208 thanks

Nah it’s opposite in fuel cells

skibidi bro , it’s opposite

💀💀💀💀💀💀

Ah thanks, it's great to have you as a subscriber!! 😊

hydrogen gets oxidised therefore becomes negative

@@ajmusoni when it’s oxidised it loses electrons so becomes positive.

It changes for both electrochemical and hydrogen fuel cells

did u not watch the video

2nd question, in your video,you said that the equation for the left cathode,which is the negative anode,is: H2->(2H+) +2e-. However in my textbook, it says “ at the negative electrode: 2H2(g) + 4OH-(aq)-> 4H2O(l)+4e-“. Are both of these equations the same?. In your video, you also said that on the right cathode, positive cathode,the equation is: O2+(4H+)+4e-. However in my textbook, it says “ O2(g)+2H2O(l)+4e-->4OH-(aq)”. Are both of these equations the same? Pls reply 🙏 thank youu

Same I'm confused

@@jonathanaliesaputra5075 your one is the overall equation, he just did the one at each electrode

Dennis Mihailov aight2 thxx

it doesn't matter which sides the electrodes are on lol

Exactly

No because in redox, the anode is negative and the cathode is positive. It’s the other way in electrolysis. I do a level chem and it’s the same thing lmao

Hey, we’ve not got an alkaline cells video in the pipeline at the moment I’m afraid :(

There was a mistake, the hydrogen would not completely enter the cathode, but since oxygen is extremely reactive it would form H2O.

Aha thank you! All in good time 🤞

Cognito fingers crossed 🤞🏽:)

fuel cell is a galvanic cell and in a galvanic cell anode has a negative charge while the cathode has a positive charge but in the case of electrolytic cells the anode has a positive charge and the cathode has a negative charge this change is bcz in electrolytic cells battery is used to provide electric current while In galvanic cells no battery is used and the elements are oxidized (lose electrons) on the anode so the electrons move from anode to cathode through the wire got it?

You are from?

me too brother

yes i love life too bro

@@seandevs5257 klm