A current of 3.7 A is passed for 6 h between nickel electrodes in 0.50 l of 2 M solution of Ni(NO3)2 — Electrochemistry Chemistry Question
Question
A current of 3.7 A is passed for 6 h between nickel electrodes in 0.50 l of 2 M solution of Ni(NO3)2. The molarity of Ni2+ at the end of electrolysis is
Answer: D
💡 Solution & Explanation
Because active nickel electrodes are used, the nickel anode undergoes oxidation (dissolution) at the exact same rate that Ni2+ ions are reduced (deposited) at the cathode. As a result, the concentration of Ni2+ in the solution remains completely unchanged. Therefore, correct answer is D.
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