Question

The correct statement(s) regarding the oxoacids, $HCl{O}_4$ and $HClO$, is/are:

• A. $HCl{O}_4$ is more acidic than $HClO$ because of the resonance stabilization of its conjugate base
• B. $HCl{O}_4$ is formed by reacting $C{l}_2$ and $H_{2}O$
• C. The central atom in both $HCl{O}_4$ and $HClO$ are $s{p}^3$ hybridized
• D. The conjugate base of $HCl{O}_4$ is weaker base than $H_{2}O$

Answer 1

Answer: (A), (C), (D)

The conjugate base of $HCl{O}_4$ is weaker base than $H_{2}O$

The conjugate base of $HCl{O}_4$ has four canonical structures. The negative charge of oxygen is stablized by conjugation.

$Cl-O^{-}$ (Conjugate base of $HClO$) is not resonance stabilized.

The central atoms $Cl$ in $HCl{O}_4$ and $O$ in $HClO$ respectively are $s{p}^3$ hybridized.

$HCl{O}_4$ is a stronger acid than $H_3{O}^{+}$ , so $Cl{O}_4^{-}$ is a weaker base than $H_{2}O.$