The heat of adsorption of a gas caused by Van der Waals forces of attraction and capillarity is equal to the heat of__________________?
Correct answer: C. Sum of A. and B.
- A. Normal condensation
- B. Wetting
- C. Sum of A. and B.
- D. Difference of A. and B.
Explanation
Adsorption caused by van der Waals attraction is analogous to condensation, while capillary adsorption involves wetting of the surface. Therefore, the heat of adsorption is represented as the sum of the heats of normal condensation and wetting.
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