Q91 · CSIR NET Chemistry, December 2011
Paper: CSIR NET December 2011 · Subject: Physical Chemistry · Chapter: Electrochemistry · Topic: Conductance · Marks: 2 · Difficulty: Medium
Which one of the following conductometric titrations will show a linear increase of the conductance with volume of the titrant added up to the break point and an almost constant conductance afterwards.
(a)A strong acid with a strong base
(b)A strong acid with a weak base
(c)A weak acid with a strong base
(d)A weak acid a weak base.
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Weak acid + weak base: the salt formed is a strong electrolyte, so conductance rises linearly until the end point; the excess weak base adds almost nothing, so the curve then stays flat.
Study loop for Electrochemistry