Why is adsorption accompanied by the decrease of both enthalpy as well as entropy of the system? Which factors help in increasing the extent of physical adsorption of the gas on charcoal powder?

The process of evaporation of a liquid is accompanied by: increase in enthalpy decrease in entropy no change in free energy increase in entropy.

What are the factors which influence the adsorption of a gas on a solide ?

which of the following factors affects the adsorption of a gas on solid ?

Fill in the blanks by putting appropriate choices. During adsorption there is _______ in enthalpy and _______ in the entropy of a system by adsorption is a spontaneous process and thus DeltaG must be ________. Rate of physisorption ________ with increase in pressure.

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25^(@)C . Identify correct one (a)The adsorption requires activation at 25^(@)C (b)The adsorption is accompanied by a decrease in enthalpy (c)The adsorption increases with increases of temperature (d)The adsorption is irreversible

Assertion : In physical adsorption , enthalpy of adsorption in very low. Reason : In physical adsorption , enthalpy of adsorption is very low. Reason : In physical adsorption , attraction between gas molecules and solid surface is due to weak van der Walls forces.

Observe the given adsorption isotherm carefully and choose the correct option (i) These curves indicates that at a fixed temperature, there is a decrease in physical adsorption with increase in pressure. (ii) These curves always seem to approach saturation at high pressure. x/m=k*p^(1//n) (n gt 1) is generally represented by this isotherm. (iv) These curves indicate that at a fixed pressure, there is a decrease in physcial adsorption with increase in temperature .

Adsorption of a gas on the surface of solid is generally accompanied by decrease entropy. Still it is a spontaneous process. Explain.

A gas undergoes physical adsorption on a surface and follows the givn Freundlich adsoprtion isotherm equation x/m= kp^(0.5) . Adsorption of the gas increases with:

A gas undergoes physical adsorption on a surface and follows the givn Freundlich adsoprtion isotherm equation x/m= kp^(0.5) . Adsorption of the gas increases with: