44. When performing a conductometric titration of a strong acid (e.g., HCl) against a strong base (e — Electrochemistry Chemistry Question
Question
44. When performing a conductometric titration of a strong acid (e.g., HCl) against a strong base (e.g., NaOH), how does the macroscopic conductance of the solution vary?
Answer: C
💡 Solution & Explanation
Initially, highly mobile $H^+$ ions are replaced by slower $Na^+$ ions, causing conductance to drop. At the equivalence point, conductance is at a minimum (only $Na^+$ and $Cl^-$ present). After equivalence, excess highly mobile $OH^-$ ions cause the conductance to shoot up rapidly, forming a V-shaped curve.
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