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Q: The unit for rate constant of first order reaction is:
  • A. Time
  • B. Time⁻¹
  • C. Concentration × Time⁻¹
  • D. Concentration⁻¹×Time⁻¹
Correct Answer: Option B - The unit of the rate constant of first order reaction is Second⁻¹ (S⁻¹) or simply time⁻¹. This reflects the rate at which the reaction proceeds over time, without depending on the concentration of the reactant.
B. The unit of the rate constant of first order reaction is Second⁻¹ (S⁻¹) or simply time⁻¹. This reflects the rate at which the reaction proceeds over time, without depending on the concentration of the reactant.

Explanations:

The unit of the rate constant of first order reaction is Second⁻¹ (S⁻¹) or simply time⁻¹. This reflects the rate at which the reaction proceeds over time, without depending on the concentration of the reactant.