t+ =Q+¿

Q¿ ; Q = I t

volume larutan NaCl yang pindah = Al

MNaCl = nNaClV

atau nNaCl = MNaCl V

NaCl Na+ + Cl-

nNa+¿=¿ nNaCl¿¿

Q+¿=nNa+¿× zNa+¿× F ¿¿¿

Perhitungan :

V = (0,120 cm2) (6 cm) = 0,72 cm3 = 7,2 x 10-4 dm3

nNaCl = (0,020 mol dm-3) (7,2 x 10-4 dm3) = 1,44 x 10-5 mol

nNa+¿¿ yang pindah = 1,44 x 10-5 mol

Q+¿¿ = (1,44 x 10-5 mol) (1)(96500 mol-1) = 1,39 C