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NEET2008ChemistryChemical KineticsActual

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 )+ Br ⁻( aq ) These kinetic data were obtained for given reaction concentrations Initial concentrations, M Based on these data, the rate equation is

Options

  1. ARate = k [ CH ₃ COCH ₃ ] [ Br ₂ ] [ H ⁺ ]
  2. BRate = k [ CH ₃ COCH ₃ ] [ H ⁺ ]
  3. CRate = k [ CH = COCH ₃ ] [ Br ₂ ]
  4. DRate = k [ CH ₃ COCH ₃ ] [ Br ₂ ] [ H ⁺ ]^2

Correct answer

B. Rate = k [ CH ₃ COCH ₃ ] [ H ⁺ ]

Step-by-step solution

In experiment (1) and (2), rate doesn't depend on the concentration of Br ₂ . So, rate expression will not include [ Br ₂ ] .

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