Question

The activity of catalyst is least at​

Answer 1

Answer:

Catalysis (/kəˈtæləsɪs/) is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst[1][2] (/ˈkætəlɪst/). Catalysts are not consumed in the catalyzed reaction but can act repeatedly. Often only very small amounts of catalyst are required.[3] The global demand for catalysts in 2010 was estimated at approximately US$29.5 billion.[4]

Answer 2

Answer:

Catalyst has an ability to increase the rate of reaction. The activity of the catalyst decreases sharply and not enough gasoline is formed as feed for cracking to light olefins.

Explanation:

• Catalyst has an ability to increase the rate of reaction. This ability of catalyst is known as the activity of catalyst. It depends upon adsorption of reactants on the surface of catalyst.
• Chemisorption is the main factor governing the activity of catalysts. The bond formed during adsorption between the catalytic surface and the reactants must not be too strong or too weak