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MHT CET202019 Oct 2020Evening ShiftChemistryChemical KineticsActual

For first order reaction the concentration of reactant decreases form 0 2 to 0.1 M in 100 minutes. What is the rate constant of the reaction?

Options

  1. A6.93 ~min ⁻¹
  2. B69 3 ~min ⁻¹
  3. C6.93 10⁻³ ~min ⁻¹
  4. D144 3 ~min ⁻¹

Correct answer

C. 6.93 10⁻³ ~min ⁻¹

Step-by-step solution

(D) aligned k &= 0.693 t _ 1 / 2 (For first order reaction) k &= 0.693 100 ~min =6.93 10⁻³ ~min ⁻¹ aligned

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