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The pK(a) of a weak acid (HA) is 4.5. Th...

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:

A

`9.5`

B

`7.0`

C

`4.5`

D

`2.5`

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The correct Answer is:
a
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