Adsorption Theory of Heterogeneous Catalysis

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

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?

Why is desorption important for a substance to act as good catalyst?

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

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

Volume of N₂ at NTP required to form a monolayer on the surface of iron catalyst is 8.15 ml/g of the adsorbent. If each nitrogen molecule occupies 16 × 10⁻²² m². The surface area of the 100 g adsorbent will be ______ × 10¹⁸ m².

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.