Calculate the fraction of limonene and the mass percent of limonene in the limonene water mixture...
Calculate the fraction of limonene and the mass percent of limonene in the limonene water mixture that would steam distill at 97.4℃. The vapor pressure of water at 97.4℃ is 690 torr. Assume that the atmospheric pressure is 760. Would the percent limonene be greater, the same or less in the mixture that steam distilled at 99 ℃?
Homework Answers
Ans :
The liquid attains boiling point , when its vapor pressure becomes equal to the atmospheric pressure. Here the liquid distills at 97.4oC when the vapor pressure is 690 torr.
But if the mixture distills at 99oC , it indicates that the vapor pressure of the liquid will be more here.
Addition of limonene (non volatile solute) decreases the vapor pressure of water , so if the liquid has higher vapor pressure , the percent limonene will be less in the mixture that steam distilled at 99oC as compared to the earlier one.
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