Question

Sulphur reacts with chlorine in 1 : 2 ratio and forms X. Hydrolysis of X gives a sulphur compound Y. What is the structure and hybridisation of anion of Y?

• A. Tetrahedral, $s{p}^3$
• B. Linear,sp
• C. Pyramidal, $s{p}^3$
• D. Trigonal planar, $s{p}^2$

Answer 1

Answer: (C)

Pyramidal, $s{p}^3$

$S+2C{l}_2\to \underset{x}{SC{l}_4}$
$SC{l}_4+4H_{2}O\to S(OH{)}_4+4HCl$
$S(OH{)}_4\to \underset{y}{H_{2}S{O}_3}+H_{2}O$
The anion of y is $S{O}_3^{2-}$ in which $S$ is is $s{p}^3$ hybridised with one lone pair of electrons on $S$, giving $S{O}_3^{2-}$ pyramidal shape.