Question

For the conversion of O₂ to O₃ in the atomosphere, nitric oxide is
(a) enzyme catalyst
(b) heterogeneous catalyst
(c) homogeneous catalyst
(d) base catalyst

Answer 1

Answer:

Since ozone, oxygen and nitric oxide are all in gas phase so nitric oxide is an homogeneous catalyst.

Answer 2

Answer:

Explanation:

(i) The substance in whose presence the rate of a

chemical reaction changes, without causing any

chemical change to it is called a catalyst.

(ii) e.g. Potassium chlorate (KClO3

) decomposes

rapidly in presence of manganese dioxide (MnO2

)

to liberate O2

gas, where manganese dioxide acts

as a catalyst.

(ii) 2KClO3

∆

MnO2

2KCl + 3O2