Bound moisture is that liquid which exerts an equilibrium vapor pressure ________________ that of the pure liquid at the given temperature ?
Correct answer: A. Less than
- A. Less than
- B. More than
- C. Equal to
- D. Either A. or B.; depends on the solid
Explanation
Bound moisture is held by the solid through adsorption or capillary forces, so it has a lower escaping tendency than free liquid. Its equilibrium vapour pressure is therefore less than that of the pure liquid at the same temperature.
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