Q86 · CSIR NET Chemistry, December 2017
Paper: CSIR NET December 2017 · Subject: Inorganic Chemistry · Chapter: Acid and Bases · Topic: Acids & Bases – General · Marks: 2 · Difficulty: Medium
The reactions given below,
\[ \mathrm{A} \mathrm{Cl}_{2}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{HOCl}+\mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{Cl}^{-} \quad \mathrm{B} \mathrm{Cl}_{2}+2 \mathrm{NH}_{3} \rightarrow \mathrm{NH}_{2} \mathrm{Cl}+\mathrm{NH}_{4}+\mathrm{Cl} \]
Are examples of(a)disproportionation only
(b)disproportionation (A) and solvation (B)
(c)solvation (A) and disproportionation (B)
(d)solvalysis as well as disproportionation
Answer
Answer: D ✓ checked by 4AB · confidence high
The source book printed A; on checking, D is correct — see the explanation.
Printed A; the solvent takes part, so it is also solvolysis.
Explanation
In both reactions Cl₂ (0) becomes +1 (HOCl / NH₂Cl) and −1 (Cl⁻) — disproportionation — and the solvent (water, ammonia) is the reagent that splits the Cl–Cl bond — solvolysis. So both are solvolysis as well as disproportionation.
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