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Methylen blue, from its aqueous solution...

Methylen blue, from its aqueous solution is adsorbed on activated charcoal at `25^(@)C.`For this process, the correct statement is

A

the adsorption requires activation at `25^(@)C.`

B

the adsorption is accompanied by a decrease in enthalpy

C

the adsorption incrases with increase of temperature

D

the adsorption is irreversible.

Text Solution

Verified by Experts

The correct Answer is:
B
The adsorption of methylene blue on activated charcoal is physical adsorption. It is accompanied by a decrease in enthalpy.
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