Adsorption

20% of surface sites are occupied by $N_2$molecules. The density of surface sites is $6.023\times {10}^{14}{\mathrm{cm}}^{-2}$ and total surface area is $1000c{m}^2$. The catalyst is heated to 300 K while $N$ is completely desorbed into a pressure of 0.001 atm and volume of $2.46c{m}^3$. The number of active sites occupied by each $N_2$ molecule will be

On which properties of adsorbent the strength of chemisorption depends.

Predict the signs for entropy and enthalpy of adsorption.

Recall the reason for a stronger force in chemical adsorption as compared to physical adsorption.

What are adsorption isostere?

What is critical temperature?

Why unimolecular layer is formed in chemical adsorption?

How many layers are adsorbed in chemical adsorption?

Pressure has no effect on chemical adsorption.

How long animal charcoal retains its absorbent properties?

Does charcoal purify air?

What is the difference between charcoal and activated charcoal?

Which adsorbent is used in gas mask?

The molecular species or substance, which concentrates or accumulates at the surface is termed adsorbate.

Define adsorbate.

The molecular species or substance, which concentrates or accumulates at the surface is termed _____.

Why chemisorption is not reversible?

Is chemisorption irreversible or endothermic?

Which adsorption is irreversible adsorption?

The role of pine oil used in froth floatation process is