Question
Question: Rate constant for a reaction is $\lambda$. Average life is represent by...
Rate constant for a reaction is λ. Average life is represent by

A
λ1
B
λln2
C
2λ
D
λ0.693
Answer
λ1
Explanation
Solution
For a first-order reaction, the average life (τ) is defined as the reciprocal of the rate constant (λ). This relationship is fundamental in chemical kinetics, particularly for processes like radioactive decay. The formula is:
τ=λ1