Methylen blue, from its aqueous solution is adsorbed on activated charcoal at `25^(@)C.`For this process, the correct statement is
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.
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Correct Answer - B
The adsorption of methylene blue on activated charcoal is physical adsorption. It is accompanied by a decrease in enthalpy.
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