Question

1. The given apparatus shows a method to separate ethanol-water mixture. - Thermometer Cork Clamp Water outlet Fractionating Water condenser Cork column Water inlet Distillation Mixture flask Pure liquid component Which of the following statements are correct? I. During the process, the liquid with the highest boiling point distils over first. II. Ethanol reaches the upper part of the column first. III. Thermometer first shows a constant reading at 100 °C IV. Ethanol vapours and water vapours both rise up the column but water vapours condense in the fractionating column and drop back into the distillation flask.
A. I and II only
B. II and III only
C. II and IV only
D. I, II, III and IV ​

Answer 1

Answer:

FRACTIONAL DISTILLATION OF MISCIBLE LIQUIDS

A fractionating column makes the process of fractional distillation more efficient than the process of simple distillation by providing increased possibilities for condensation of the liquid. A fractionating column packed with glass beads or glass helices provides a large surface area for the vapours to collide and lose energy so that they can be condensed and distilled quickly. Increasing the length of the fractionating column would also increase the efficiency of fractional distillation.

Explanation:

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