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The bromination of acetone that occurs in acid solution is represented by this equation CH_3 COCH_3( aq)+ Br_2( aq) → CH_3 COCH_2 Br( aq)+ H^+( aq)+…

NEET UG 2008 — Chemistry Physical Chemistry

2008mcqmedium

The bromination of acetone that occurs in acid solution is represented by this equation CH3COCH3(aq)+Br2(aq)→CH3COCH2Br(aq)+H+(aq)+Br−(aq)\mathrm{CH}_3 \mathrm{COCH}_3(\mathrm{aq})+\mathrm{Br}_2(\mathrm{aq}) \rightarrow \mathrm{CH}_3 \mathrm{COCH}_2 \mathrm{Br}(\mathrm{aq})+\mathrm{H}^{+}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq})CH3​COCH3​(aq)+Br2​(aq)→CH3​COCH2​Br(aq)+H+(aq)+Br−(aq) These kinetic data were obtained for given reaction concentrations Initial concentrations, M NEET 2008 Chemistry, Chemical Kinetics — question figure

Based on these data, the rate equation is

Official previous-year question

Held on 30 Apr 2008 · Verified 9 Jul 2026.

Options

  1. A

    Rate=k[CH3COCH3][Br2][H+]\mathrm{Rate}=\mathrm{k}\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]\left[\mathrm{H}^{+}\right]Rate=k[CH3​COCH3​][Br2​][H+]

  2. B

    Rate=k[CH3COCH3][H+]\mathrm{Rate}=\mathrm{k}\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{H}^{+}\right]Rate=k[CH3​COCH3​][H+]

  3. C

    Rate=k[CH=COCH3][Br2]\mathrm{Rate}=\mathrm{k}\left[\mathrm{CH}=\mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]Rate=k[CH=COCH3​][Br2​]

  4. D

    Rate =k[CH3COCH3][Br2][H+]2=\mathrm{k}\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]\left[\mathrm{H}^{+}\right]^2=k[CH3​COCH3​][Br2​][H+]2

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