The correct (S) about surface properties is (are)

Options

A. The critical temperatures of ethane and nitrogen are 563 K and K, respectibely. The adsorption of ethame will be nore than that of nitrogen on same amount of activated charcoal at a given temperature
B. Cloud is an emulsion type of colloid in which liquid is dispersed phase and gas is dispersion medium
C. Adsorption is accompained by decreases in enthalpy and decrease in enthalpy and decrease in entropy of th system
D. Brownian motion of colloidal particles does not depend on the size of the particles but depends on visosity of the solution.

Answer

A, C

Explanation

More the critical temperature (Tc) more are the intermolecular forces of attraction and greater is the extent of adsorption. This means that ethane (Tc=573 K) is expected to be adsorbed more as compared to nitrogen (Tc = 126 K)
Adsorption is an exothermic process and is accompanied by decrease in entropy.
`DeltaGunderset((-ve))(=DeltaH)-underset((-ve))(TDeltaS)" "DeltaH gtTDeltaS`