Question

It has been proposed that the conversion of ozone into O₂ proceeds in two steps :

O_3(g) ⇋ o_2(g) + O_(g) 

O_3(g) + O_(g) -----> 2O_2(g) 

(a) Write the equation for overall reaction.

(b) Identify the intermediate, if any.

(c) Derive molecularity for each step of mechanism.

Answer 1

(a) Addition of the two steps gives the overall reaction

2O_3(g) ------> 3O_2(g)

(b) Intermediate is O_(g).

(c) The first step is unimolecular. The second step is bimolecular.