Msc chemistry(adsorption )

What are the basic assumptions of Langmuir adsorption isotherm?

write any four features of activated carbon so that it is superior to other adsorbents

what are the major differences between activated carbon and molecular sieve in the mode of adsorption and application?

which of the following is /are true for the adsorption of H2O and NH3 on the surface of zeolite?

• it involves mainly vanderwaal's force of attraction

• it involves mainly electrostatic force of attraction

• high heat of adsorption

• low heat of adsorption

• adsorption is specific in nature

heat of adsorption at low coverage means

• there is a significant interaction between neighboring adsorbed molecule

• shows the relationship between average potential energy and heat of adsorption

• interaction between neighboring adsorbed molecule is negligible

• shows the relationship between average potential energy with polarisability, dipole moment,quadrupole moment and electric field

which one is true about the diameter of mesoporous adsorbent material

• less than 2 nm

• more than 50 nm

• in between 2-50 nm

multilayer adsorption is explained by

• langmuir isotherm

• Freundlich Adsorption Isotherm

• BET adsorption Isotherm

in Freundlich Isotherm , x is the mass of gas adsorbed and m indicates------