A galvanic cell is set up from a zinc bar weighing 100 g and 1.0 L of 1.0 M copper sulphate solution — Electrochemistry Chemistry Question

💡 Solution & Explanation

Moles of Zn = 100/65.4 = 1.53 mol. Moles of Cu2+ = 1.0 mol. Cu2+ is the limiting reagent. For 1 mol Cu2+, charge $Q = nF = 2 \times 96500 = 193000$ C. Time $t = Q/I = 193000 / 1.0$ s. Converting to hours: $193000 / 3600 \approx 53.61$ hours. Therefore, correct answer is A.