Question

The half-life of first order reaction is 1.7 hour. What is its rate constant?

Options

• 0.245 hr^-1

• 1.07 hr^-1

• 0.407 hr^-1

• 3.45 hr^-1

Answer 1

0.407 hr^-1 

Explanation:

For first order reaction.

k = `0.693/"t"_(1//2) = 0.693/1.7 " hr"^(- 1)`

k = 0.407 hr^-1