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Bases

The increasin...

Question

The increasing order of basic strength of $C l^{-}, C O_{3}^{2 -}, C H_{3} C O O^{-}, O H^{-}, F^{-}$ is__________.

A

C l^{-} < F^{-} < C H_{3} C O O^{-} < C O_{3}^{2 -} < O H^{-}

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B

C l^{-} < F^{-} < C O_{3}^{2 -} < C H_{3} C O O^{-} < O H^{-}

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C

C H_{3} C O O^{-} < C l^{-} < F^{-} < C O_{3}^{2 -} < O H^{-}

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D

C l^{-} < F^{-} < C H_{3} C O O^{-} < O H^{-} < C O_{3}^{2 -}

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Solution

The correct option is B $C l^{-} < F^{-} < C O_{3}^{2 -} < C H_{3} C O O^{-} < O H^{-}$
We know, conjugate base of strong acid is weak,
So,
$H C l > H F > H_{2} C O_{3} > C H_{3} C O O H > H_{2} O$
$⟵$
$a c i d i c s t r e n g t h$
$∴$ strength of conjugate base
$C l^{-} < F^{-} < {C O_{3}}^{2 -} < C H_{3} C O O^{-} < O H^{-}$

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