Chemistry - Complete Pblock- Question with Solution | TestHub

Acidic strength$\propto$stability of conjugate base (Anion)

stability of conjugate base$\propto$less charge density$\propto$more charge delocalisation$\propto$resonating structure



Oxidation state of chlorine$\propto$Acidity of Oxo Acid.

$\mathrm{H}\mathrm{C}\mathrm{l}\mathrm{O}<\mathrm{H}\mathrm{C}\mathrm{l}{\mathrm{O}}_2<\mathrm{H}\mathrm{C}\mathrm{l}{\mathrm{O}}_3<\mathrm{H}\mathrm{C}\mathrm{l}{\mathrm{O}}_4$is the correct increasing order.