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COMEDK2016ChemistryChemical Kinetics

Which of the following is wrongly matched?

Options

  1. ADecomposition of H ₂ O ₂- first order reaction.
  2. BCombination of H ₂ and Br ₂ to give HBr -zero order reaction.
  3. CSaponification of CH ₃ COOC ₂ H ₅ -second order reaction.
  4. DHydrolysis of CH ₃ COOCH ₃- pseudo unimolecular reaction.

Correct answer

B. Combination of H ₂ and Br ₂ to give HBr -zero order reaction.

Step-by-step solution

Combination of H ₂ and Br ₂ to give HBr , is second order reaction. H ₂+ Br ₂ 2 HBr Rate law expression, r=k [ H ₂ ] [ Br ₂ ] Order w.r.t. H ₂ and Br ₂ is one. Overall order =1+1=2

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