While electrolyzing water before passing the current some drops of an acid ………………….

Question :(i) While electrolyzing water before passing the current some drops of an acid are added why? Name the gases liberated at the cathode and anode. Write the relationship between the volume of gas collected at the anode and the volume of gas collected at the cathode.

(ii) What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.

The correct answer is -(i) Acid is added to water before electrolysis to increase its conductivity. This allows the current to pass through the solution easily. Hydrogen gas is liberated at the cathode, while oxygen gas is liberated at the anode. The volume of gas collected at the anode is twice the volume of gas collected at the cathode. 2H₂O(l) → 2H₂(g) + O₂(g) (ii) When silver chloride is exposed to sunlight, it decomposes to form silver metal and chlorine gas. 2AgCl(s) → 2Ag(s) + Cl₂(g) This is a photochemical decomposition reaction.