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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

2.5

B

9.5

C

7

D

4.5

Text Solution

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The correct Answer is:
B
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