In the electrolysis of acidified AgNO3 solution using Pt-electrodes, the anode reaction is — Electrochemistry Chemistry Question

💡 Solution & Explanation

With inert Pt electrodes, the competition at the anode is between the oxidation of NO3- and H2O. Since water has a much lower oxidation potential than the highly stable nitrate ion, water is oxidized preferentially to evolve oxygen gas. Therefore, correct answer is C.