The overall cell reaction is — Electrochemistry Chemistry Question

💡 Solution & Explanation

The cell notation indicates oxidation of hydrogen gas at the anode: H2(g) -> 2H^+(aq) + 2e^-. At the cathode, solid silver chloride is reduced: 2AgCl(s) + 2e^- -> 2Ag(s) + 2Cl^-(aq). Adding the two half-reactions gives the overall cell reaction: H2(g) + 2AgCl(s) -> 2H^+(aq) + 2Cl^-(aq) + 2Ag(s), which can be written with aqueous HCl. Therefore, correct answer is A.