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Question

Among the following oxoacids, the correct decreasing order of acid strength is:


A
HClO4>HClO3>HClO2>HOCl
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B
HClO2>HClO4>HClO3>HOCl
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C
HOCl>HClO2>HClO3>HClO4
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D
HClO4>HOCl>HClO2>HClO3
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Solution

The correct option is B $$ HClO_{4}>HClO_{3}>HClO_{2}>HOCl$$
Acidic strength $$\propto$$ Oxidation number

Increasing acid strength due to an increase in the oxidation state of the central atom.

$$ HClO<HClO_{2}<HClO_{3}< HClO_{4}$$

    $$+1$$            $$+3$$            $$+5$$            $$+7$$

Hence, option $$A$$ is correct.

Chemistry

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