Question

$HClO,HCl{O}_2,HCl{O}_3,HCl{O}_4$ . Arrange the given compound in order of increasing acidic strength

Answer 1

The increasing order of acidic strength for the given compounds is as follows:

$HClO<HCl{O}_2<HCl{O}_3<HCl{O}_4$. The acidic nature increases with increase in oxidation number of chlorine in the given compounds. Therefore, perchloric acid $\left(HCl{O}_4\right)$ with oxidation state of +7 is most acidic. Here are the oxidation states of the remaining options:

$HCl{O}_3$ = +5

$HCl{O}_2$ = +3

$HClO$ = +1