pBlock ElementsII 2 Question 22
22. The correct statement(s) about the oxoacids, $\mathrm{HClO}_{4}$ and $\mathrm{HClO}$, is (are)
(2017 Adv.)
(a) The central atom in both $\mathrm{HClO}_{4}$ and $\mathrm{HClO}$ is $s p^{3}$-hybridised
(b) $\mathrm{HClO}{4}$ is formed in the reaction between $\mathrm{Cl}{2}$ and $\mathrm{H}_{2} \mathrm{O}$
(c) The conjugate base of $\mathrm{HClO}{4}$ is weaker base than $\mathrm{H}{2} \mathrm{O}$
(d) $\mathrm{HClO}_{4}$ is more acidic than $\mathrm{HClO}$ because of the resonance stabilisation of its anion
Show Answer
Solution:
- (a) $\mathrm{ClO}_{4}^{-}$is more stable than $\mathrm{ClO}^{-}$.
(b) Incorrect : $\mathrm{Cl}{2}+\mathrm{H}{2} \mathrm{O} \longrightarrow \mathrm{HCl}+\mathrm{HOCl}$
(c)
(d) $\mathrm{HClO}{4}$ is stronger acid than $\mathrm{H}{2} \mathrm{O}$.
