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.

Create a free account to view solution

View Solution Free
Topic: Surface Chemistry·Practice all Surface Chemistry questions

More Surface Chemistry Questions

Which of the following substance gives a positively charged sol?...Lyophobic colloids are...Which of the following is not a colloidal system?...Which one is colloid :...Which property of colloidal solution is independent of charge on the colloidal particles :-...