In an electrolytic cell using inert electrodes, a current of 4.00 A is passed through a molten binary salt with the formula XCl for 20.0 minutes.
1.15 g of metal X is produced at the cathode.
What is the metal X?
(a) Li
(b)Na
(c)K
(d)Rb
(e)Cs
I tried to use ne=IT/F with F=9.65×10^4 c/mol, I=4c/s, T=20min=1200s.
Then divided 1.15 g with calculated ne, 4.97×10^-2 mol.
The answer I got was about 23.14 g/mol, and closest was Na with 22.99 g/mol. Did I get correct or did something wrong??