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MHT CET202618 April 2026Morning ShiftChemistryChemical KineticsActual

For the reaction 2 NOBr _ (g) 2 NO _ (g) + Br _ 2(g) , rate law is r = k[ NOBr ]^2 . Rate constant is 1.62 M s ⁻¹ and concentration of NOBr is 5 10⁻³ M , What is rate of reaction?

Options

  1. A4.05 10⁻⁵ M s ⁻¹
  2. B6.48 10⁻⁶ M s ⁻¹
  3. C2.12 10⁻⁵ M s ⁻¹
  4. D8.63 10⁻⁶ M s ⁻¹

Correct answer

A. 4.05 10⁻⁵ M s ⁻¹

Step-by-step solution

Given rate law is r = k[ NOBr ]^2 Substituting the given values: r = 1.62 (5 10⁻³)^2 r = 1.62 25 10⁻⁶ r = 40.5 10⁻⁶ r = 4.05 10⁻⁵ M s ⁻¹ Answer: 4.05 10⁻⁵ M s ⁻¹

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