Chemistry - CHEMICAL BONDING Question with Solution | TestHub

The reaction is: $SOC{l}_2+H_{2}O\to H_{2}S{O}_3+2HCl$.

(I) $H_{2}S{O}_3$ has $s{p}^3$ hybridization and $\mathrm{HCl}$ also is $s{p}^3$ hybridized (incorrect).

(II) $H_{2}S{O}_3$ is a weak acid, and $\mathrm{HCl}$ is a strong acid (incorrect).

(III) $H_{2}S{O}_3$ has $p\pi -d\pi$ bonds (correct).

(IV) $\mathrm{HCl}$ reacts with ${\mathrm{NH}}_3$ to give white fumes of ${\mathrm{NH}}_4\mathrm{Cl}$ (correct).

Incorrect statements are I and II.

Answer: B