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MHT CET202523 Apr 2025Evening ShiftChemistryChemical KineticsActual

Rate law for the reaction, NO _ 2( ~g ) + CO _ ( g ) NO _ ( g ) + CO _ 2( ~g ) is as R = k [ NO ₂ ]^2 What is the order of reaction w.r.t. CO ?

Options

  1. AZero
  2. B1
  3. C1.5
  4. D2

Correct answer

A. Zero

Step-by-step solution

The rate law for the reaction NO _ 2( g ) + CO _ ( g ) NO _ ( g ) + CO _ 2( g ) is given by R = k [ NO ₂]^2 . Since the concentration of NO ₂ is raised to the power of 2, the order with respect to NO ₂ is 2. The concentration of CO does not appear in the rate law, indicating zero-order dependence. Therefore, the order with respect to CO is 0. Final answer: A

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