When acidulated water (dil.H 2 SO 4 solution) is electrolysed, will the pH of the solution be affected? Justify your answer.

Question

Philoid · Accepted Answer

The following reactions take place when acidulated water is electrolysed.

Anode: 2H₂O(l)→ O₂(g) + 4H⁺ (aq) + 4e^–

Cathode: 4H⁺ + 4e^-→ 2H₂

Overall cell reaction: 2H₂O(l) → O₂(g) + 2H₂(g)

pH remains the same because concentration of H⁺ ions remains constant.

When acidulated water (dil.H2SO4 solution) is electrolysed, will the pH of the solution be affected? Justify your answer.