Give two important characteristics of physisorption.

Differentiate physisorption and chemisorption.

In case of chemisorption, why adsorption first increases and then decreases with temperature?

Which will be adsorbed more readily on the surface of charcoal and why? NH₃ or CO₂?

Heat of adsorption is greater for chemisorptions than physisorption. Why?

In a coagulation experiment 10 mL of a colloid (X) is mixed with distilled water and 0.1M solution of an electrolyte AB so that the volume is 20 mL. It was found that all solutions containing more than 6.6 mL of AB coagulate with in 5 minutes. What is the flocculation values of AB for sol (X)?

The mechanism of Fridel crafts reaction is given below
\({ C }_{ 6 }{ H }_{ 5 }+{ { CH }_{ 3 }Cl\overset { anhydrous\\ \quad { Alcl }_{ 3 } }{ \longrightarrow } }{ C }_{ 6 }{ H }_{ 5 }{ CH }_{ 3 }+HCl\)

Thermal decomposition of KClO₃  in presence of MnO₂ proceeds as follows.
Steps in the reaction 2KClO₃  → 2KCl + 3O₂ can be given as

Formation of water due to the reaction of H₂ and O₂ in the presence of Cu proceeds as follows. Steps in the reaction H₂ + 1/2O₂ → H₂O can be given as

Give three examples of emulsifiers.

Define Deemulsification.

What is catalysis?

What are the two types of catalysis?

Define adsorbent and adsorbate.

What are the factors affecting adsorption?