During electrolysis, 35 g of chlorine were released at the anode, find the time of the electrolysis if the current was 10 A.

Problem data: m (mass of chlorine released at the anode) = 35 g (in SI m = 0.035 kg); I (current) = 10 A.

Constants: k (electrochemical equivalent of chlorine) = 0.367 * 10-6 kg / C (we use the table value).

To calculate the duration of electrolysis, we apply the first Faraday’s law: m = k * I * t and t = m / (k * I).

Calculation: t = 0.035 / (0.367 * 10-6 * 10) = 9537 s ≈ 159 minutes or 2 hours 39 minutes.

Answer: The electrolysis lasted 2 hours 39 minutes.