JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Mock Test - Surface Chemistry

Select the correct observation in the following isotherm: (where \[\frac{x}{m}\]= amount of the adsorbat adsorbed per gram m of the adsorbent)

A) \[\left( \frac{x}{m} \right)\propto p{}^\circ \] when point (x) is reached

B) Desorption may start along XY

C) \[\left( \frac{x}{m} \right)\propto \,{{(p)}^{1/n}}\]along OX

D) All of the above

Correct Answer: D

Solution :

[d] This represents Frundlich adsorption isotherm.

(1) Along XY, \[\left( \frac{x}{m} \right)\propto {{p}^{o}}\] = constant. Thus, correct.

(2) When point X is reached, saturation is attained (there is no further adsorption), Hence desorption may start. Thus, correct.

(3) \[\left( \frac{x}{m} \right)\propto {{(p)}^{1/n}}\]Along OX, Thus, correct.