Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Question Explanation:

Identifying the correct statement regarding the hydrolysis of halides.

Concept:

Hydrolysis of Covalent Halides and Noble Gas Compounds

Solution:

${\mathrm{BCl}}_3$ and ${\mathrm{SiCl}}_4$ : Both are hydrolyzed because Boron and Silicon have vacant orbitals to accept water's lone pair.

${\mathbf{CCl}}_4$ : It is not hydrolyzed under ordinary conditions due to the absence of vacant d-orbitals in Carbon.

${\mathbf{XeF}}_2$ : Hydrolysis of ${\mathrm{XeF}}_2$ is a redox reaction where Xe is reduced ( +2 to 0 ) and Oxygen is oxidized ( -2 to 0 ). It produces $\mathrm{Xe},\mathrm{HF}$ and ${\mathrm{O}}_2$.

$2{\mathrm{XeF}}_2+2{\mathrm{H}}_2\mathrm{O}\to 2\mathrm{Xe}+4\mathrm{HF}+{\mathrm{O}}_2$ Oxidation state of Xe changes from +2 to 0 (Reduction). Oxidation state of O changes from -2 to 0 (Oxidation).

Final Answer: Hydrolysis of ${\mathrm{XeF}}_2$ is a redox reaction.