Faraday / Colomb

Hi everybody,

Somebody here knows that we can measure the Q ( quantity of electricity

that passes in an electrolyte cell ) using,

Q = I * t

This would be in colomb, but also we can measure the quantity of

electricity needed to deposit one mole of Al+3 using the equation,

Al+3 + 3e= Al

In this case we need a quantity of electricity equal 3 Faraday to deposit 1

mole of Al.

My question is, what is the difference between Q in Farady ( unit ) and Q

in Colomb ( unit ) ?


I hope that is clear