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Nucleophile

If pKa is m...

Question

If $p K_{a}$ is more than $p K_{b}$ , the $p H$ of the aqueous solution of the salt formed by the above acid and base is:

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> 7

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< 7

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Solution

The correct option is C $> 7$
More the value of $p K_{a}$ , less acidic the acid is. This is because $p K_{a} = - l o g [H^{+}]$
Thus, if $p K_{a}$ is more than $p K_{b}$ the basic character will be more.
$∴ p H > 7$

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