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.