Faradays Constant

[TwinkleTits]

From what I heard a faraday is a mole of electrons. In faradays constant "F = 96 485.339 9(24) C/mol" I don't get what the C/mol means. Coulombs per mole? What the hell does that mean? In a coulomb theres 6x10^18 electrons. How the hell could there 96 million coulombs in a faraday if theres only a mole of electrons in a faraday?

[danmega]

ask the island...

[comrade george]

It's 96 thousand, not million.

[TwinkleTits]

Originally Posted by comrade george

It's 96 thousand, not million.

Oh yea didn't see the dot there. So 1 Faraday is 96 thousand coulombs?

[Mathematics]

Originally Posted by TwinkleTits

Oh yea didn't see the dot there. So 1 Faraday is 96 thousand coulombs?

per mole. So if you have two moles of electrons you have 2 Faradays of charge I imagine. Sounds like a pointless unit to be honest.

[comrade george]

Roughly, yeah, 96 thousand coulombs per mole

EDIT: Beat me to it

Sounds like a pointless unit to be honest.

Yeah, because saying 96,485.339 coulombs per mole every time you want to do an electrochemical equation is much easier...

[TwinkleTits]

Originally Posted by Mathematics

per mole. So if you have two moles of electrons you have 2 Faradays of charge I imagine. Sounds like a pointless unit to be honest.

Yeah I think its fairly obsolete they only teach you the unit because its sometimes used by convention in quantitative electrolysis e.g. 1 Faraday produces x grams of product at the electrode.

[Schwexx]

We've used it alot in this years chemistry course, electrochemistry of course.
Useful in electrolysis and for standard reduction/oxidation potentials

its basically one mole of electrons (6.02*10^23) x charge of e- (1.6*10^-19)=96485 C/mol

[Dark Feather]

Its basically charge contained in one mole electrons.
That is if you were to pass ome mole electrons you would pass around 96500 C.
Unit C/mol says the same thing, ie charge per mole.
Its used in equvalent, electrolytic chemistry but thats another story.