Answer to Question #68449 in Physical Chemistry for hesham

Question

why is amount of electricity we need to produce 32 oxygen by electrolysis is the same needed to produce 2 g of hydrogen gas ?

Answer 1

Solution:
The amount of oxygen is equal to the amount of hydrogen.
n(O_2 )=m/M=32/32=1 mol;
n(H_2 )=m/M=2/2=1 mol.