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Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 250C. For this process, the correct statement is (A) The adsorption requires activation at 250C. (B) The adsorption is accompanied by a decrease in enthalpy. (C) The adsorption increases with increase of temperature. (D) The adsorption is irreversible.

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 250C. For this process, the correct statement is
(A) The adsorption requires activation at 250C.
(B) The adsorption is accompanied by a decrease in enthalpy.
(C) The adsorption increases with increase of temperature. (D) The adsorption is irreversible.

Grade:11

2 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
11 months ago
Dear student

The answer is B

Regards
Vikas TU
14149 Points
11 months ago
Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25∘C . For process, the correct statement is. Solution : Adsorption of methylene blue on activated charcoal is physical adsorption hence it is characterized by decreases in enthalpy.

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