Q. Which of the following reactions is an example of heterogeneous catalysis?
A) $O_{3} + O\overset{Cl}{\rightarrow}2O_{2}(gas\ phase)$
B) $2CO(g) + O_{2}(g)\overset{NO}{\rightarrow}2{CO}_{2}(g)$
C) [image:5_image12.png]
D) $CO(g) + 2H_{2}(g)\overset{Cu,\ ZnO - {Cr}_{2}O_{3}}{\rightarrow}{CH}_{3}OH(l)$
Explanation
(c)
$2H_{2}O_{2}(l)\overset{Pt\ (s)}{\rightarrow}2H_{2}O(l) + O_{2}(g)$
In this reaction, reactants and catalyst are in different phase, hence it is an example of heterogeneous catalysis.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.