Question

Determine the overall cell potential for a system in which the following equation represent s the net reaction :Zno(s)+Fe 2+ = Zn 3+ Feo(s)

Answer 1

oxidation Zn(s) → Zn3+(aq) + 2e–

E° = 0.763 V

reduction

Fe2+(aq)+2e- → Fe(s)=-0.44V

E_cell=E_oxd-E_red=0.763-(-0.44)=1.203V