Q19 · CSIR NET Chemistry, June 2017
Paper: CSIR NET June 2017 · Subject: Inorganic Chemistry · Chapter: Acids and Bases · Topic: Acids & Bases – General · Marks: 2 · Difficulty: Medium
Match items in column A with items in column B:
| Column A | Column B |
|---|---|
| I. $\mathrm{SbF_5+BrF_3\rightarrow[BrF_2]^{+}[SbF_6]^{-}}$ | A. Lewis acid behavior of $\mathrm{BrF_3}$ |
| II. $[\mathrm{BrF_2}][\mathrm{SbF_6}]+\mathrm{Ag}[\mathrm{BrF_4}]\rightarrow \mathrm{Ag}[\mathrm{SbF_6}]+2\mathrm{BrF_3}$ | B. Lewis base behavior of $\mathrm{BrF_3}$ |
| III. $\mathrm{KF+BrF_3\rightarrow K^{+}+[BrF_4]^{-}}$ | C. Self-ionization |
| IV. $3\mathrm{BrF_3}\rightarrow[\mathrm{BrF_2}]^{+}+[\mathrm{BrF_4}]^{-}$ | D. Neutralisation |
(a)I-(A); II-(B); III-(C); IV-(D)
(b)I-(B); II-(D); III-(C); IV-(A)
(c)I-(C); II-(D); III-(B); IV-(A)
(d)I-(B); II-(D); III-(A); IV-(C)
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
I: BrF₃ donates F⁻ to SbF₅ — Lewis base (B). II: acid [BrF₂]⁺ + base [BrF₄]⁻ → neutralisation (D). III: BrF₃ accepts F⁻ from KF — Lewis acid (A). IV: self-ionisation (C).
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