When adsorption hysteresis is observed, the desorption equilibrium pre – McqOptions

MCQOPTIONS

1.	When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.
A.	always lower than
B.	always higher than
C.	same as
D.	dependent on the system; can be either lower or higher than
Answer» B. always higher than

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