Arrange the following oxoacids of chlorine in increasing order of their acidic strength: Hypochlorous acid (), Chlorous acid (), Chloric acid (), and Perchloric acid ().

Question

Arrange the following oxoacids of chlorine in increasing order of their acidic strength: Hypochlorous acid ($HClO$), Chlorous acid ($HClO_2$), Chloric acid ($HClO_3$), and Perchloric acid ($HClO_4$).

Prashant Kotian · Accepted Answer

Correct answer: B. The acidic strength of oxoacids of the same halogen increases directly with the oxidation state of the central halogen. The oxidation states of Cl are +1, +3, +5, and +7 respectively. Thus, acidic strength increases strictly from to .

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