7.64 The ionization constant of chloroacetic acid is 1.35 × 10-3. What will be the pH of 0.1M acid and its 0.1M sodium salt solution?
We have,
Ionisation constant of chloroacetic acid() is
The concentration of acid = 0.1 M
Ionisation if acid, =
We know that,
....................(i)
As it completely ionised
Putting the values in eq (i)
Therefore, of the solution =
=
=
Now,
0.1 M (sod. chloroacetate) is basic due to hydrolysis-
For a salt of strong base+strong acid