Adsorption

The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is (are) correct?

Among physisorption and chemisorption, which type of a adsorption has a higher enthalpy of 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

20% of surface sites are occupied by ${\mathrm{N}}_2$ molecules. The density of surface sites is $6.023\times {10}^{14}{\mathrm{cm}}^{-2}$ and total surface area is $1000 {\mathrm{cm}}^2$. The catalyst is heated to 300 K while ${\mathrm{N}}_2$ is completely desorbed into a pressure of 0.001 atm and volume of $2.46 {\mathrm{cm}}^3$. The number of active sites occupied by each ${\mathrm{N}}_2$ molecule will be:

Adsorption of gases on solid surface is generally exothermic because:

Rate of physisorption increase with

Rate of physisorption increase with:

Predict the signs for entropy and enthalpy of adsorption.

Which of the following statements regarding the adsorption of gases on solid surface is FALSE?

Which of the following is the correct adsorption isobar for physical adsorption? 

$4.8 \mathrm{g}$ of oxygen is adsorbed on $1.2 \mathrm{g}$ of metal powder. The volume of oxygen adsorbed per gram of the adsorbent at $\mathrm{NTP}$ is

Which of the following statements is wrong for chemisorption?

The correct order of temperature in the given Freundlich adsorption isotherm is

For spontaneous physical adsorption

The correct statement for Freundlich adsorption isotherm is

Which can adsorb larger volume of hydrogen gas?

In adsortion from solution phase, the freundlich dsorption isotherm is modified as

By plotting $\log \mathrm{x}/\mathrm{m}$ on $\mathrm{y}$-axis and $\log \mathrm{P}$ on $\mathrm{x}$-axis, we should get.

Which of the following is correct about the adsorption of ${\mathrm{N}}_2$ over Iron?