Question

1. Identify the gasses evolved at the anode and cathode in the above experimental set up.
2. Name the process that occurs. Why is it called so?
3. Illustrate the reaction of the process with the help of a chemical equation.

Answer 1

1. Anode: Chlorine; Cathode: Hydrogen
2. Chlor alkali process as the products obtained are alkali, chlorine gas and hydrogen gas.
3. \[\ce{2NaCl(aq) + 2H2O(I) ->[Electric Current] 2NaOH(aq) + Cl2 (g) + H2(g)}\]