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COMEDK2016ChemistryChemical Kinetics

The velocity constant of a reaction at 290 ~K was found to be 3.2 10⁻³ ~s ⁻¹ . When the temperature is raised to 310 ~K , it will be about

Options

  1. A9.6 10⁻³
  2. B1.28 10⁻²
  3. C6.4 10⁻³
  4. D3.2 10⁻⁴

Correct answer

B. 1.28 10⁻²

Step-by-step solution

For every 10 ~K rise in temperature, rate of reaction double. From 298 ~K to 310 ~K , the reaction rate became (2)² times i.e., 4 times. k=3.2 10⁻³ ~s ⁻¹ 4=1.28 10⁻² ~s ⁻¹

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