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faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 2:05 pm
by masmith
Does anyone know the formulae that "Faraday" discovered to find how many amps were need to gain a certain amount of an element in a certain time by the means if electrolysis?

I know it includes "moles" and 1faraday = 96,485 Coulombs, Ive had to teach myself some of this as it is not taught in the GCSE syllabus >:(

Ive looked some place that say 20apms is needed to produce 1 litre of H2 per minute and other formulae ive used say 144amps?

I also have been fishing about in some old O-level books but cant find much... :(

Could any one clear this up for me?

Thanks,

Re: faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 2:11 pm
by Travis
Have you checked Wikipedia's Faraday entry?

Re: faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 2:15 pm
by Katahu
Does anyone know the formulae that "Faraday" discovered to find how many amps were need to gain a certain amount of an element in a certain time by the means if electrolysis?

I know it includes "moles" and 1faraday = 96,485 Coulombs, Ive had to teach myself some of this as it is not taught in the GCSE syllabus >:(

Ive looked some place that say 20apms is needed to produce 1 litre of H2 per minute and other formulae ive used say 144amps?

I also have been fishing about in some old O-level books but cant find much... :(

Could any one clear this up for me?

Thanks,


ARGH! Too Much - Math! Argh!

*Katahu's Head Explodes*

Re: faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 3:21 pm
by Tweek
I know it includes "moles" and 1faraday = 96,485 Coulombs, Ive had to teach myself some of this as it is not taught in the GCSE syllabus >:(

Ive looked some place that say 20apms is needed to produce 1 litre of H2 per minute and other formulae ive used say 144amps?

I also have been fishing about in some old O-level books but cant find much... :(


In that case, you won't need to know it. I can't remember ever doing anything like that for GCSE.

They won't test you on stuff that isn't taught. ;)

Re: faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 3:29 pm
by masmith
In that case, you won't need to know it. I can't remember ever doing anything like that for GCSE.

They won't test you on stuff that isn't taught.  



Its just out of common interest I am asking not because I need to know it for an exam...

Re: faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 5:11 pm
by Tweek
Its just out of common interest I am asking not because I need to know it for an exam...


In that case, there's no need to be annoyed that it isn't taught at GCSE. ;)

Re: faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 5:57 pm
by TacitBlue

ARGH! Too Much - Math! Argh!

*Katahu's Head Explodes*



Image

There ya' go. ;)

Re: faraday electrolysis laws?

PostPosted: Fri Nov 24, 2006 8:24 pm
by eniranjanrao
Are you hell bent on spoiling some's day by mentioning maths we already had enough of it school :P

Re: faraday electrolysis laws?

PostPosted: Sat Nov 25, 2006 2:48 am
by Mobius
Have you checked Wikipedia's Faraday entry?

and http://en.wikipedia.org/wiki/Electrolysis

and http://en.wikipedia.org/wiki/Gibbs_free_energy

should keep you busy for a bit, but it seems that it all depends on the change in the Gibbs free energy, which is the similar to the amount of charge (F)/energy that must be added to a system to cause a reaction, which is where the F=Ne equation comes from.  The Gibbs free energy can be found by subtracting the absolute temperature times the entropy from the total enthalpy of the reaction (G=H-TS), but apparently the entropy is close to zero, so the total energy change is close to the enthalpy change(G~=H), which would be proportional to the electric input assuming isentropic thermodynamic efficiency, but that is impossible.  

This is almost exactly what we've done in thermodynamics the last couple of weeks, and I really must say, I don't enjoy it at all.  However, if you do, good luck with that, and thank god there's someone out there that actually likes it, so I don't have to think about it anymore. ;D ;)

Re: faraday electrolysis laws?

PostPosted: Sat Nov 25, 2006 3:12 am
by masmith
Hey woh calm down...

1.Yes I do like maths.
2.Yes I do like Science.
3.I like to read up on subjects that we are not taught at school, just out of interest.

In that case, there's no need to be annoyed that it isn't taught at GCSE.

Iam sort of annoyed, as if it was in  my GCSE text box then I would know it, and science it is rather interesting they should put it in the syllabus and also they do need to be a bit more changeling.

Are you hell bent on spoiling some's day by mentioning maths we already had enough of it school  

No I'm not hell bent day by mentioning maths, and why the hell would that spoil your day?

Thanks for the links Mobius,

And just be for anyone jumps to conclusions,
I don't wear bottom bottle glasses
I don't wear a shirt with the top button done up (with-out a tie)
You dont have to have a "Social disability" to carry on learning a subject in your free time

And no I'm not social disabled...

Masmith,