Which of the following represents the correct order for acidic strength:

H C l O_{4} > H I O_{4} > H B r O_{4}

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H C l O_{4} > H B r O_{4} > H I O_{4}

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H C l O_{4} < H B r O_{4} > H I O_{4}

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None of these

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Solution

The correct option is B $H C l O_{4} > H B r O_{4} > H I O_{4}$
As electronegativity of the halogen decreases, the order of acidic strength also decreases.
Thus the acidic strength follows the order: $H C l O_{4} > H B r O_{4} > H I O_{4}$

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Which one of the following orders correctly represents the increasing acid strengths of the given acids?

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