19. During the high-temperature electrolysis of molten Sodium Chloride (), what is the approximate t — Electrochemistry Chemistry Question

💡 Solution & Explanation

The reaction is $2Cl^- \rightarrow Cl_2 + 2e^-$. To produce 0.1 mol $Cl_2$, 0.2 mol of electrons (0.2 F) are needed. Total charge $Q = 0.2 \times 96500 = 19300$ C. Since $Q = I \times t$, $t = 19300 / 3 = 6433.3$ seconds. In minutes, $6433.3 / 60 \approx 107.2$ minutes, which rounds to 110 minutes.