Consider the following electrolytic cell, C(s)|NiI2(aq),|C(s)

Question

a. Identify potential Oxidizing agents and Reduction agents

b. Determine the standard cell potential

c. Include the half reactions, indicating the cathode and the anode

d. Include the overall reaction

Answer 1

a) I₂ is the potential oxidizing agent and Ni is the potential reducing agent

b) Eºcell = 0.536 - (-0.257) = 0.793 V

c) I₂ + 2e- ==> 2I^- + 2e- Eº = 0.536 V (cathode)

Ni ==> Ni²⁺ + 2e- Eº = -0.257 V (anode)

c) I₂ + Ni ==> 2I^- + Ni²⁺