Which process occurs in the electrolysis of an aqueous solution of nickel chloride at nickel anode? — Electrochemistry Chemistry Question

💡 Solution & Explanation

A nickel anode is an "active" or "attackable" electrode. Because the oxidation potential of nickel is higher than the oxidation potentials of chloride ions or water, the nickel anode will preferentially oxidize itself and dissolve into the solution as $Ni^{2+}$ ions. Therefore, correct answer is A.