The correct statement(s) about the oxoacids, $\mathrm{HClO}_{4}$ and HClO , is(are)\

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Professor PC Thomas Classes · Answer

$(\mathrm{a}, \mathrm{b}, \mathrm{d})$ : Structures of HClO and $\mathrm{HClO}_{4}$ are :\(a)$\mathrm{HClO}_{4}$ is a stronger acid than $\mathrm{H}_{3} \mathrm{O}^{+}$. Therefore, conjugate base of $\mathrm{HClO}_{4}$, i.e., $\mathrm{ClO}_{4}^{-}$, is weaker base than $\mathrm{H}_{2} \mathrm{O}$.\(b)The hybridisation of central atom in both HClO and $\mathrm{HClO}_{4}$ is $s p^{3}$.\ (c)Reaction of $\mathrm{Cl}_{2}$ with water forms HOCl which decomposes to give nascent oxygen.\ $\mathrm{Cl}_{2}+\mathrm{H}_{2} \mathrm{O} \rightarrow[\mathrm{HCl}+\mathrm{HOCl}] \rightarrow 2 \mathrm{HCl}+[\mathrm{O}]$\(d)$\mathrm{HClO}_{4}$ is more acidic than HClO as $\mathrm{ClO}_{4}^{-}$is more stable than $\mathrm{ClO}^{-}$due to resonance.\