• # question_answer The strongest acid amongst the following is [IIT 1989] A) $HCl{{O}_{4}}$ B) $HCl{{O}_{3}}$ C) $HCl{{O}_{2}}$ D) $HClO$

Correct Answer: A

Solution :

$+7$          $+5$            $+3$           $+1$    $HCl{{O}_{4}}>$ $HCl{{O}_{3}}>$ $2Cu{{I}_{2}}\,\to \,\underset{\text{Cuprous iodide}\,\,\,\,\,\,\,\,\,\,}{\mathop{2CuI\,\,\,\,\,\,\,+\,\,\,\,\,{{I}_{2}}}}\,$ $HClO$ As the oxidation no. of halogen increases acidic character increases.

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