Question

Choose the correct representation of conductometric titration of benzoic acid vs sodium hydroxide.

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

(A) $\to$ (B) Free $H^{+}$ions are replaced by $N{a}^{\oplus }$ which decreases conductance.
(B) $\to$ (C) Un-dissociated benzoic acid reacts with $NaOH$ and forms salt which increases ions & conductance increases.
(C) $\to$ (D) After equivalence point at (3), $NaOH$ added further increases $N{a}^{\oplus }\&O{H}^{\odot }$ ions which further increases the conductance.