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Q.

The relation $p K_{a} = 14 - p K_{b}$ is true for which of the following pair(s)?

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a

$C H_{3} N H_{3}^{+}, C H_{3} N H_{2}$

b

$C H_{3} C O O H, C H_{3} C O O^{-}$

c

$H_{3} O^{+}, O H^{-}$

d

$N a^{+}, N a O H$

answer is B, A.

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Detailed Solution

$\begin{array}{l} C H_{3} N H_{3}^{+}, C H_{3} N H_{2} \\ C H_{3} C O O H, C H_{3} C O O^{-} \end{array}}$ (conjugate acid base pairs)

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