Question

Oxidising agent increase order for chlorine oxides

Answer 1

For many acids, the proton H+HX+ is the oxidizing agent. For example, in the oxidation of zinc with HClHCl, the oxidizing agent is H+HX+.

Zn+2H+⟶Zn2++H2Zn+2HX+⟶ZnX2++HX2

However, for some acids, the conjugate base (anion) is also an oxidant (and usually a more powerful oxidant than H+HX+. The oxyacids of chlorine are all oxidizing agents through their anions, as is nitric acid and some others: