Q. According to Langmuir adsorption isotherm the amount of gas adsorbed at very high pressure :
A) Reaches a constant limiting value
B) Goes on increasing with pressure
C) Goes on decreasing with pressure
D) Increases first and decreases later with pressure
Explanation
(a)
Langmuir’s adsorption isotherm deals in terms of chemical adsorption which fails at high pressure because, the mass adsorbed reaches a constant value when the adsorbed surface is completely covered by a unimolecular layer of gases.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.