The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below : O_3(g)+Cl^{∙}(g)\toO_2(g)+ClO^{∙}(g) →i k_i=5.2\times10^9Lmol^{-1}s^{-1} ClO^{∙}(g)+O^{∙}(g)\toO_2(g)+Cl^{∙}(g)→ii k_{ii}=2.6\times10^10Lmol^{-1}s^{-1} The closest rate constant for the overall reaction O_3(g)+O^{∙}\to2O_2(g) is: [Main 9 Apr 2016]

Correct Answer is : 1.4×1020Lmol−1s−1

Chemical Kinetics Part 1

Section: Chemistry

Question : 62 of 100

Marks: +1, -0

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=5.2×109Lmol−1s−1

ClO∙(g)+O∙(g)→O2(g)+Cl∙(g)→ii

kii=2.6×1010Lmol−1s−1
The closest rate constant for the overall reaction O3(g)+O∙→2O2(g) is:

[Main 9 Apr 2016]

5.2×109Lmol−1s−1
2.6×1010Lmol−1s−1
3.1×1010Lmol−1s−1
1.4×1020Lmol−1s−1

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