ADDITIONAL QUESTIONS 1. Th e essential oils we isolated were mostly liquids. Why

Question

ADDITIONAL QUESTIONS 1. Th e essential oils we isolated were mostly liquids. Why is steam distillation used to isolate essential oil rather than just distilling the oil from the dry plant material? 2. Assume that you are doing the distillation of cloves and the atmospheric pressure is 755 mm Hg. In the range 96-100 C, the vapor pressure of eugenol (the major compound in clove oil) is about 8 mmHg. Estimate (to the nearest 0.1 °C) the temperature at which the distillation of eugenol occurred. (To answer this question, you will need to look up the vapor pressure of water as a function of temperature. Be sure to cite your source, and clearly explain your answer.) compare to the ordinary boiling point of pure eugenol or pure water? Karen Long 1995. Updated 2010 M.Ulrich and 2016 J.Ruchl

Explanation / Answer

IF YOU WANT TO SEPERATE ESSENTIAL OIL BY DISTILLATION IT IS NOT POSSIBLE BECAUSE, TO DISTILLATE THAT WE HAVE TO HEAT THAT FEED UPTO BOILING POINT OF ESSENTIAL OIL.

BY THIS IT WILL DECOMPSE OR WORSE ,FOR THIS WE NEED TO DO STEAM DISTILLATION.

IN STEAM DISTILLATION THE MIXTURE BOILS AT 1 ATM AND BELOW Ta &Tb OF MIXTURE ,WHICH IS EQUAL TO Ta (WATER BOILING POINT).

PaXa+PbXb=P

755=8*Xa+760*Xb

Xa+Xb=1

SOLVING THESE EQUATION WE GET ANSWER.

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