The `pK_(a)` of a weak acid `(HA)` is `4.5`. The `pOH` of an aqueous buffered solution of `HA` in which `50%` of the acid is ionized is:

The pK_(a0 of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionized is :

The pK_a of a weak acid (HA) is 4.5 The pOH of an aqueous buffered solution of HA in which 50% of it is ionised is

The pH of an aqueous solution of a 0.1 M solution of weak monoprotic acid, which is 1 % ionized is

The pK_(a) of a weak acid, HA , is 4.80 . The pK_(b) of a weak base, BOH , is 4.78 . The pH of an aqueous solution of the corresponding salt, BA , will be: