Steam Distillation Of Essential Oils

1. characteristics that make a substance that is separated from a heterogeneous mixture by distillation Stam?

2. role in facilitating the steam distillation of essential oils

3. compare and contrast simple steam distillation in terms of mixture type

1. It must have a substantial vapor pressure at 100C. (It should be volatile with steam.) Must be miscible with water. (You must be able to separate the water later.)

2. Water boils at 100 ° C, so that the oil temperature is never more than 100C. This allows you to distill the oil to 100 ° C, where it can decompose its actual boiling point of air. When water is boiling and the steam is carried to the condenser, the multitude of water vapor to oxygen and also protects the oil from the decomposition.

3. I do not understand.

1 and 2 have been answered, I think.
3. I think the simple distillation is usually a homogeneous mixture and is generally a separation against BP discovered allotrope mind. This is in contrast with dist'n steam depends on the water vapor, etc.