Question

For which order reaction is the half-life of the reaction proportional to 1/k (k is the rate constant)? A Zero order B. First order c. Second order D. All of the above

Answer 1

The correct answer is option b.

Step-by-step explanation:

where [A]₀ is the initial concentration of reactant and k is the rate constant. Here half-life is proportional to 1/2_k_. Hence this option can be neglected.b) Half-life of a first-order reaction is as follows:t1/2=0.693kHere half-life is proportional to 1/k, hence this option is the correct choice.c) Half-life of a second-order reaction is as follows:t1/2=1k[A]0Here, the half-life is proportional to 1/k [A]₀. Hence this option can be neglected.d) This option can be neglected as (b) is the only correct choice.