QuestionElectrochemistry / conductometric titration
When HCl is titrated against NaOH, the conductance at the end point is:
- (a) Zero
- (b) Minimum
- (c) Maximum
- (d) Infinite
Answer: (b) Minimum
Fast H⁺ (λ° ≈ 350) is replaced by slow Na⁺ (≈ 50): conductance falls to the end point, then rises as excess OH⁻ (≈ 198) is added. V-shaped curve → minimum at the end point → (b).