In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because_______________?
Correct answer: B. Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium
- A. Temperature is less
- B. Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium
- C. Total pressure is less
- D. condition
- E. Saturated steam is used for steam distillation
Explanation
In steam distillation, the steam and evaporated material usually do not contact long or intimately enough to reach vapour-liquid equilibrium before leaving. Consequently, the outgoing steam is not completely saturated with distillate vapour.
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