Catalysis and surface chemistry

2. The common surface between the two phases where the adsorbed molecules concentrate is called the ......
4. The catalyst is ....... chemically at the end of the reaction.
7. releasing heat as surface energy decreases (∆H is negative).
10. The juice extracted from the cane is treated with animal charcoal for the ----- of the coloring agent.
11. poisonous gases get ---- at the surface of the coal.
12. ----- Weak, van der Waals forces hold molecules to the surface.
15. The accumulation of molecules on a surface.
17. substances upon whose surface the change of concentration occurs is called .....
19. It means constant temperature.
20. retards the rate of a chemical reaction.

1. ...... the catalyst is present in the same phase as the reactants.
3. --- by which molecules or atoms are released from a solid surface into a gas or liquid phase.
5. Does adsorption increase with temperature?
6. ........ Manufacture of ammonia using iron as a catalyst.
8. Adsorption ------- with pressure, reaches a maximum, and becomes constant.
9. ----- is a substance that changes the speed of a reaction.
13. Chemistry is the study of the chemical phenomena that occur at the surface.
14. -----is a bulk phenomenon, while adsorption is a surface phenomenon.
16. The two primary methods used for predicting the adsorption capacity of a given material are known as the ------and Langmuir isotherms.
18. ------cannot be reversed and occurs at high temperatures initially; specific in nature.