The same current is passed through acidulated water and stannous chloride solution. What volume of d — Electrochemistry Chemistry Question

💡 Solution & Explanation

Moles of Sn deposited = 1.20 / 120 = 0.01 mol. Since Sn is in the +2 state, equivalents = 0.01 * 2 = 0.02 eq. For water, 0.02 eq of H2 (0.01 mol) and 0.02 eq of O2 (0.005 mol) are evolved. Total moles of 'detonating gas' (H2 + O2) = 0.01 + 0.005 = 0.015 mol. Volume at STP = 0.015 * 22400 ml = 336 ml. Therefore, correct answer is B.