Question

the k of a salt increases if the salt is dissolved in strongly acidic solution with a titration

true/false?

please, explain as much as you can

Answer 1

1) When a salt of a weak acid is titrated with a strong acid, the anion of the weak acid is replaced by that of the strong acid and weak acid itself is liberated in the undissociated form. (similarly example of weak base can be given )

As K for a weak salt can be given by

AB A⁺ + B^-

as written above the release of free anion will increse the K (equillibrium constant )

K= [A] [B]/ [AB ] as the concerntration of free ions increses because they are displaced by strong acid our K hence wil increses .

2) Similarly, in the addition of a strong base to the salt of a weak base, the cation of the weak base is replaced by that of the stronger one and the weak base itself is generated in the undissociated form.