Question

In the net cell reaction shown below, identify the oxidizing and reducing agents. Cd(s) + NiO2(s) + 2 H2O(l) → Cd(OH)2(s) + Ni(OH)2(s) A. Oxidizing Agent: H2O(l), Reducing Agent: Cd(s) B. Oxidizing Agent: Cd(s), Reducing Agent: NiO2(s) C. Oxidizing Agent: NiO2(s), Reducing Agent: Cd(s) D. Oxidizing Agent: Ni(OH)2(s), Reducing Agent: Cd(OH)2(s) E. Oxidizing Agent: Ni(OH)2(s), Reducing Agent: Cd(s)

Answer 1

answer : C)

the reaction :

Cd(s) + NiO2 (s) + 2H2O (l) -------------------> Cd(OH)2 (s) + Ni(OH)2

oxidation :

Cd(s) -------------------> Cd(OH)2 + 2e-

(0)                                  (+2)

reduction :

NiO2 + 2e- -----------------> Ni(OH)2

+4                                        +2

oxidizing agent is NiO2

reducing agent Cd

answer : C.) Oxidizing Agent: NiO2(s), Reducing Agent: Cd(s)