Which of the following elementary steps would be LEAST likely to occur at 298 K and 1…

CHEMISTRY · Single correct · A Level · Chemistry · Kinetics · Kinetics

Problem

Which of the following elementary steps would be LEAST likely to occur at 298 K and 1 atm on the basis of collision-probability considerations? (a)

\mathrm{O(g)+O_3(g)\;\rightarrow\;2\,O_2(g)}

(b)

\mathrm{2\,NO_2(g)+O_2(g)\;\rightarrow\;2\,NO_3(g)}

(c)

\mathrm{NO(g)+O_3(g)\;\rightarrow\;NO_2(g)+O_2(g)}

(d)

\mathrm{O_3(g)\;\rightarrow\;O_2(g)+O(g)}