Help with Faraday's Laws Question

[emiinaaa]

When 289,500 Coulombs of electricity are passed through an electrolytic cell containing molten potassium chloride, what are the masses of potassium and chlorine produced?

Mr(K)=39 and Mr(Cl₂)=71

[TheRajinator]

Q(C)=n(e)*96500
n(e)=289500/96500=3mol
n(K)=n(e)=3
therefore m(K)=Mr(K)*n(K)=39*3=117g
n(e)/2=n(Cl2)=1.5
m(Cl2)=Mr(Cl2)*n(Cl2)=71*1.5=106.5g

[emiinaaa]

n(K)=n(e)=3

n(e)/2=n(Cl2)=1.5

Sorry I don't understand how you came to this..

[charmanderp]

n(K)=n(e)=3

n(e)/2=n(Cl2)=1.5

Sorry I don't understand how you came to this..

Look in the electrochemical series and you'll find the mole ratio between electrons and potassium and electrons and chlorine.