STD 11 - 3. Classification of elements and periodicity in properties — JEE STD 11 Science — Question

$[A]$ $HClO_4$ is more acidic than $\mathrm{HClO}$ because of the resonance stabilization of its anion

$[B]$ $HClO_4$ is formed in the reaction between $Cl_2$ and $H_2 O$

$[C]$ The central atom in both $HClO_4$ and $HClO$ is $s p^3$ hybridized

$[D]$ The conjugate base of $HClO_4$ is weaker base than $H_2 O$

$A{B_3}(g) \rightleftharpoons A{B_2}(g) + \frac{1}{2}{B_2}(g)$ , when the initial pressure of $AB_3$ is $800\,torr$ and the total pressure developed at equilibrium is $900\,torr$ . What percentage of $AB_3(g)$ is dissociated?