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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

`7.0`

B

4.5

C

2.5

D

9.5

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The correct Answer is:
D
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