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The bromination of acetone that occurs in acid solution is represented by the equation

CH3COCH3(aq) + Br2(aq) → CH3COCH2Br(aq) + H+(aq) + Br(aq)

These kinetic data were obtained from given reaction concentrations.
Initial concentrations, (M)

[CH3COCH3][Br2][H+]
0.300.050.05
0.300.100.05
0.300.100.10
0.400.050.20

Initial Rate, disappearance of Br2, ms–1
(a)5.7 × 10–5
(b)5.7 × 10–5
(c)1.2 × 10–4
(d)3.1 × 10–4
Based on these data, the rate of reaction is

rate = k [CH3COCH3] [Br2]
rate = k [CH3COCH3] [Br2] [H+]2
rate = k [CH3COCH3] [Br2] [H+]
rate = k [CH3COCH3] [H+]
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