Theoretical organic chemistry / by Julius B. Cohen.

  • Julius B. Cohen
Date:
1902
Catalogue details

Licence: Public Domain Mark

Credit: Theoretical organic chemistry / by Julius B. Cohen. Source: Wellcome Collection.

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    i - Water and pouring the mixture into a separating or tap-funnel J(Fig. 7). The benzene will separate and float above the water in which the alcohol remains dissolved. The aqueous layer is then drawn off and separated from the benzene. [ Oitestions on Chatter I C 1. Give reasons for retaining organic chemistry as a separate branch of chemistry-. 2. What is meant by fractional crystallisation and fractional distil¬ lation ? With what object are these two processes employed ? 3. Explain the principle of the fractionating column. Can the process of fractional distillation be employed in the separation of all mixtures of volatile liquids of different boiling-points? 4. How is the purity of organic liquids and solids ascertained ? 5. Devise methods for separating the constituents in the following mixtures: (1)alcohol from water; (2) benzene from alcohol; (3) glycerol (glycerine) from water.