Question

The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two-step process shown below o3(g)+cl(g)o2(g)+clo(g) (i) ki=5.2109lmol1s1 clo(g)+o(g)o2(g)+cl(g) (ii) kii=2.61010lmol1s1 the closet rate constant for the overall reaction o3(g)+o(g)2o2(g) is (a) 5.2109lmol1s1(b) 2.61010lmol1s1(c) 3.11010lmol1s1

Answer 1

The rate constant of the reaction will be a) 5.2 x 10⁹ L mol⁻¹s⁻¹

Explanation :

The two step reactions are given below:

o3(g)+cl(g)-------->o2(g)+clo(g)

Ki = 5.2 x 10⁹ L mol⁻¹s⁻¹

clo(g)+o(g)---------->o2(g)+cl(g)

Ki = 2.6 x 10¹⁰ L mol⁻¹s⁻¹

We know that the rate constant of the overall reaction depends upon the rate of constant of the slowest step. Looking at the equations the first equation is the slowest step.

Hence the rate constant of the reaction will be a) 5.2 x 10⁹ L mol⁻¹s⁻¹

I hope it helps.

Answer 2

Answer:

Explanation:

we cannot say a step is fast or slow by just seeing the reaction directly

in this two steps the K value of first step is low  (The rate determine step is the reaction which has low K value)

SO,OVER ALL RATE CONSTANT IS "CLOSEST" TO THIS VALUE