Question

Half-life of a first order reaction is 30 minutes at 300 K. The value of its rate constant, K is ______.

Options

• 2.31 min⁻¹

• 0.0231 min⁻¹

• 0.231 min⁻¹

• 2.310 × 10⁻³ min⁻¹

Answer 1

Half-life of a first order reaction is 30 minutes at 300 K. The value of its rate constant, K is 0.0231 min⁻¹.

Explanation:

For first order reaction

k = `0.693/t_(1//2)`

k = `0.693/30`

k = 0.0231 min⁻¹