Question

For a certain first-order reaction with the general form A→Products, the rate is 0.32 m.s⁻¹ when the concentration of the reactant is 0.29m. What is the rate constant for this reaction?

a) 0.32
b) 0.29
c) 1.10
d) 2.76

Answer 1

The order of the reaction with respect to [A] is 1 and the rate law is rate = k[A]. The rate constant for the reaction is approximately 1.103 m⁻¹.s⁻¹.

Step-by-step explanation:

The given reaction is a first-order reaction, which means that the rate is proportional to the concentration of the reactant raised to the first power. Therefore, the order of the reaction with respect to [A] is 1. The rate law for a first-order reaction is given by:

rate = k[A]

Given that the rate is 0.32 m.s⁻¹ when the concentration of the reactant [A] is 0.29 M, we can substitute these values into the rate law equation and solve for the rate constant (k).

0.32 = k * 0.29

Solving for k:

k = 0.32 / 0.29 ≈ 1.103

Therefore, the rate constant for this reaction is approximately 1.103 m⁻¹.s⁻¹.