Adsorption Theory of Heterogeneous Catalysis

\[\ce{H2}\] gas is adsorbed on activated charcoal to a very little extent in comparison to easily liquefiable gases due to:

(i) very strong van der Waal’s interaction.

(ii) very weak van der Waals forces.

(iii) very low critical temperature.

(iv) very high critical temperature.

Do the vital functions of the body such as digestion get affected during fever? Explain your answer.

How does a solid catalyst enhance the rate of combination of gaseous molecules?

Which of the following statements are correct about solid catalyst?

(i) Same reactants may give different product by using different catalysts.

(ii) Catalyst does not change ∆H of reaction.

(iii) Catalyst is required in large quantities to catalyse reactions.

(iv) Catalytic activity of a solid catalyst does not depend upon the strength of chemisorption.

Finely divided catalyst has greater surface area and has greater catalytic activity than a compact solid. If a total surface area of 6291456 cm² is required for adsorption of gaseous reaction in a catalysed reaction, then the number of splits should be made of a cube exactly 1 cm in length is ______.
[Given : After each split new cubes of equal dimensions are formed.]

What is the role of desorption in the process of catalysis?

What do you understand by shape selective catalysis? Why are zeolites good shape selective catalysts?

Substance that enhances the activity of a catalyst is known as ____________.