Unit Surface Chemistry S.No. Answers . (c) 1n x =k.p m x log( )=logk+ logp m n y=c+mx m = and c= logk n ⇒ . The incorrect statement is option (b) Physisorption is an exothermic process.
Hence increase in temperature decreases the physisorption. . (d) Adsorption leads to decrease in randomness (entropy).i.e. D S< for the adsorption to occur, D G should be -ve.
We know that D D D G= H-T S if D S is -ve, T S D is +ve. It means that ∆ G will become negative only when ∆ H is -ve and D D H>T S . (c) dispersion medium-gas dispersed phase-liquid . pyroxylin(nitro cellulose) .
(a) (Hardy-Schulze rule) . (d) Both reactant and catalyst are in same phase. i.e(l) . (b) .
(a) . (b) Emulsion dispersed phase Dispersion medium -liquid . (a) coagulating power coagulation value α . (b) Gel-butter .
(d) D S is -ve . (d) As S is a -vely charged colloid. It will be most effectively coagulated by the cation with greater valency. i.e., Al + .
(d) Tyndall effect-scattering of light . (d) . (b) - - - -