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NEET 2008
Exam
NEET
Year
2008
Subject
Chemistry
Chapter
Chemical Kinetics

NEET 2008 · Chemistry · Chemical Kinetics

The bromination of acetone that occurs in acid solution is...

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}) These kinetic data were obtained for given reaction concentrations Initial concentrations, M The bromination of acetone that occurs in acid solution is represented by this equation CH_3 COCH_3(aq)+Br_2(aq) arrow
Based on these data, the rate equation is

Options

  1. ARate=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]
  2. BRate=k[CH3COCH3][H+]\mathrm{Rate}=\mathrm{k}\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{H}^{+}\right]
  3. C\mathrm{Rate}=\mathrm{k}\left[\mathrm{CH}=\mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]
  4. DRate $=\mathrm{k}\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{Br}_2\right]\left[\mathrm{H}^{+}\right]^2

Correct answer

B. Rate=k[CH3COCH3][H+]\mathrm{Rate}=\mathrm{k}\left[\mathrm{CH}_3 \mathrm{COCH}_3\right]\left[\mathrm{H}^{+}\right]

Step-by-step solution

In experiment (1) and (2), rate doesn't depend on the concentration of Br2\mathrm{Br}_2. So, rate expression will not include \left[\mathrm{Br}_2\right]$.
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