JEE Advanced | 2013Surface ChemistryHard

Question

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25o C. For this process, which of the following statement is correct?

Options

A.The adsorption requires activation at 25o C.
B.The adsorption is accompanied by a decrease in enthalpy.
C.The adsorption increases with increase in temperature.
D.The adsorption is irreversible.

Solution

Adsorption is physisorption.

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