TEST--54--XII [electro-]

An electric current is applied to an aqueous solution of FeCl₂ and ZnCl₂. Which reaction occurs at the cathode?

a) Fe²⁺_(aq) + 2e^-_(aq) à Fe_(s) E˚_red=-0.44V

b) Fe_(s) à Fe²⁺ _(aq) + 2e^- E˚_ox=0.44V

c) Zn⁺²_(aq) + 2e^-_(aq) à Zn_(s) E˚_red=-0.76V

d) Zn_(s) à Zn²⁺ _(aq) + 2e^- E˚_ox=0.76V

e) 2H₂O_(l) à O_2(g) + 4H⁺_(aq) + 4e- E˚_ox=-1.23V