A chlorine atom reacts with an ozone molecule in the gas phase according to the elementary reaction
Cl(g)+O3(g)→ClO(g)+O2(g)
Which rate expression is most consistent with this reaction step?
a) rate =k[Cl]
b) rate =k[O3]
c) rate =k[Cl][O3]
d) rate =k[Cl]2[O3]