Question

1. Write one similarity between physisorption and chemisorption.           

2. What happens when gelatin is added to gold sol.                   

3.Why is it necessary to remove CO when ammonia is obtained by Haber’s process.

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

5. What happens when dialysis is prolonged ?
plz answer all fasttt​

Answer 1

Answer:

1.Both physisorption and chemisorption depend upon the nature of the substance adsorbed. Physisorption is possible easier for gases high critical temperature (Tc) while chemisorption takes place only if there is possibility of formation of covalent bond between the two substances

Answer 2

Answer:

1. Both increases when surface area increases. Both are dependent on temperature, nature of reactant and pressure.

2.Gold sol is a solvent repelling sol i.e., a lyophobic sol and unstable in nature. Addition of gelatin stabilises the gold because gelatin forms lyophilic sol and act as a protective colloid.

3. Carbon monoxide acts as a poison for Haber's process. If CO remains then the process won't occur at an effecient rate.

4. Desorption provides more surface area for extra reactant tobe converted to product on the surface of catalyst.

5. When dialysis is prolonged, traces of electrolyte which stabilises the colloids are removed completely. This makes the colloid unstable and therefore coagulation takes place.

I hope you are clear if not just comment me