Matching Chemical Reactions with Water

We will analyze each compound in Column-I and determine its reaction with water, then match with the correct option(s) from Column-II.

Step 1: Analyze (A) (CH₃)₂SiCl₂

This is dichlorodimethylsilane, an organosilicon halide. It undergoes hydrolysis with water:

$\left({\mathrm{CH}}_3\right)2_{}\mathrm{SiCl}{2}_{}+2H_{2}O\to \left({\mathrm{CH}}_3\right)2_{}\mathrm{Si}\left(\mathrm{OH}\right)2_{}+2\mathrm{HCl}$

Hydrogen chloride (HCl) is formed, and the silanol can undergo condensation polymerization to form silicones. Thus, it matches with (p) Hydrogen halide formation and (s) Polymerization.

Step 2: Analyze (B) XeF₄

Xenon tetrafluoride reacts with water in a redox reaction, producing xenon, oxygen, and hydrogen fluoride:

$6\mathrm{XeF}{4}_{}+12H_{2}O\to 4\mathrm{Xe}+2\mathrm{XeO}{3}_{}+24\mathrm{HF}+3O_2$

Oxygen gas (O₂) is produced, and it is a redox reaction. It matches with (q) Redox reaction and (t) O₂ formation.

Step 3: Analyze (C) Cl₂

Chlorine gas undergoes disproportionation in water:

${\mathrm{Cl}}_2+H_{2}O\rightleftharpoons \mathrm{HCl}+\mathrm{HOCl}$

Hydrogen chloride (HCl) and hypochlorous acid (HOCl) are formed. It is a redox reaction (disproportionation) and produces hydrogen halide. It matches with (p) Hydrogen halide formation and (q) Redox reaction.

Step 4: Analyze (D) VCl₅

Vanadium pentachloride hydrolyzes vigorously with water, producing vanadium oxychloride and hydrogen chloride:

$2\mathrm{VCl}{5}_{}+H_{2}O\to 2\mathrm{VOCl}{3}_{}+2\mathrm{HCl}$

Vanadium oxychloride (VOCl₃) reacts with glass (silicon dioxide), forming volatile compounds:

$4\mathrm{VOCl}{3}_{}+3\mathrm{SiO}{2}_{}\to 2V_2{O}_3\mathrm{Cl}{2}_{}+3\mathrm{SiCl}{4}_{}+O_2$

It produces hydrogen halide and reacts with glass. Thus, it matches with (p) Hydrogen halide formation and (r) Reacts with glass.

Final Answer:

(A) → (p), (s); (B) → (q), (t); (C) → (p), (q); (D) → (p), (r)

Related Topics and Formulae

Hydrolysis of Halides: Many covalent halides react with water to form hydrogen halides and corresponding hydroxides or oxides.

Redox Reactions: Reactions where oxidation and reduction occur simultaneously, e.g., disproportionation of Cl₂ or hydrolysis of XeF₄.

Polymerization: Silanols like (CH₃)₂Si(OH)₂ undergo condensation to form polysiloxanes (silicones).

Reaction with Glass: Compounds like VOCl₃ or HF attack SiO₂ in glass, forming volatile silicon halides.