Question

Out of $HClO,HBrO$ and $HIO$ which one is most acidic :

• A. $HBrO$
• B. $HClO$
• C. $HIO$
• D. All are equally acidic

Answer 1

The correct option is B $HClO$

As $Cl$ is most electronegative out of $Cl,Br,I$, it will make the $Cl-O$ bond more polar and weaker compared to $Br$ and $I$.

Therefore, $HClO$ will be most acidic.

Hence the correct option is B.