Question

During titration of strong acid with a weak base, which one is correct with respect to conductance?

• A. It increases till the end point
• B. It decreases till the end point
• C. End point cannot be determined using conductimetry
• D. Conductance not altered

Hint:

In acid-base titrations involving strong acids and weak bases, conductance usually decreases due to replacement of highly mobile H\textsuperscript{+} ions.

Answer 1

The Correct Option is B

In the titration of a strong acid with a weak base, the highly conductive hydrogen ions are gradually replaced by less conductive ammonium or other weak base ions. Hence, the conductance decreases till the end point.