Methylene blue, from its aqueous solution, is adsorbed on activated ch – InterviewSolution

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1.	Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at `25^(@)C` . For process, the correct statement isA. The adsorption requires activation at `25^(@)C`B. The adsorption is accompanied by a decrease in enthalpyC. The adsorption increases with increase of temperatureD. The adsorption is irrvessible
Answer» Correct Answer - B Adsorption of methylene blue on activated charcoal is physical adsorption, hence it is reversible. Physical adsorption is exothermic `(DeltaH` is `-ve`)and its extent decreases with increases of temperature.

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