Assignment
No – 1
Surface
Chemistry
Que 1. What are the sign of ΔH and ΔS for
adsorption of bromine on charcoal?
Que 2. Why are substances like platinum
and palladium often used for carrying out electrolysis of aqueous solutions?
Que 3. Why does physisorption decreases
with the increase of temperature?
Que
4. Why is it necessary to remove CO when ammonia is obtained by Haber's process?
Que 5. What are the physical states of
dispersed phase and dispersion medium of froth?
Que 6. What is shape selective catalysis?
Que 7. Why lyophilic colloids are more
stable than lyophobic colloids?
Que 8. What is the cause of Brownian
movement among colloidal particles?
Que 9. Write the main reason for the
stability of colloidal sols.
Que 10. Give an example of micelle
system?
Que 11. Write down the example of
positively charged sol?
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