Problem: Which of the following reactions may occur at the anode? a. Ga3+ (aq) + 3 e–       →      Ga (s) b. Cu2+ (aq) + 2 e–      →       Cu (s) c. 2 Cl – (aq)      →       Cl2 (g) + 3 e– d. Co (s) + e–      →      Co+ (aq) 

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Which of the following reactions may occur at the anode?

a. Ga3+ (aq) + 3 e       →      Ga (s)

b. Cu2+ (aq) + 2 e–      →       Cu (s)

c. 2 Cl (aq)      →       Cl2 (g) + 3 e

d. Co (s) + e–      →      Co+ (aq)