Steam distillation is not recommended to be used, if the _____________________?
Correct answer: E. Azeotropic mixture is to be separated and the final product is miscible with water
- A. Material to be distilled is thermally unstable or has the tendency to react with other
- B. Liquids decompose, if distilled directly at atmospheric pressure
- C. Material cannot be distilled by indirect heating even under low pressure, because of the high
- D. boiling temperature
- E. Azeotropic mixture is to be separated and the final product is miscible with water
- F. components associated with it, at the boiling temperature
Explanation
Steam distillation is useful for thermally sensitive or water-immiscible materials because the mixture boils below the normal boiling point of the component. It is unsuitable when the desired product is miscible with water, since separating the product from the condensed water becomes difficult.
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