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Assertion: HClO(4) is a stronger acid th...

Assertion: `HClO_(4)` is a stronger acid than `HClO_(3)`.
Reason: Oxidation state of `Cl` in `HClO_(4)` is `+VII` and in `HClO_(3)+V`.

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`HClO_(4)` has lower `pK_(a)` value (stronger acid) than `HClO_(3)` (weaker acid).
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