How many grams of silver metal are produced from Ag⁺(aq) in 1.80 h with a current of 3.50 A? (F = 96,500 C/mol)

Answer 1

Ag⁺(aq) + 1e- ==> Ag(s)

3.50 amps = 3.50 C/s

1.80 h x 60 min / h x 60 s / min = 6480 seconds (s)

3.50 C / s x 6480 s = 22,680 C

It takes 96,500 C for each 1 mole of electrons, so ...

22.680 C x 1 mol e- / 96,500 C = 0.235 mols electrons

0.235 mols e- x 1 mol Ag / 1 mol e- = 0.235 mols Ag

Mass of Ag = 0.235 mols Ag x 107.9 g Ag / mol = 25.4 g Ag produced

(be sure to check the math)