The following acids have been arranged in the order of decreasing acid strength. Identify the correct order:
$C l O H (I) B r O H (I I) I O H (I I I)$

I > I I > I I I

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I I > I > I I I

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I I I > I I > I

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I > I I I > I I

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Solution

The correct option is A $I > I I > I I I$
Strong acid has its weak conjugate base.
Strength of conjugate base: $C l O^{-} < B r O^{-} < I O^{-}$ as electronegativity decreases down the group so basicity increases.
Strength of acid follow a reverse order as: $C l O H > B r O H > I O H$ .

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