Given the reaction :
[tex]\text{NaI +3HOCl }\Rightarrow NaIO_3\text{ + 3HCL }[/tex]• Chlorine is reduced in this reaction
,• oxidation state of chlorine in (HOCl) = +1, whereas
,• oxidation state of chlorine in HCl = -1
• This means that HOCl is the oxidising agent.