Question

17. Read the following and answer the questions.

Simple distillation is a procedure by which two liquids with different boiling points can be

separated. Simple distillation can be used effectively to separate liquids that have at least

fifty degrees difference in their boiling points. As the liquid being distilled is heated, the

vapours that form will be richest in the component of the mixture that boils at the lowest

temperature. Purified compounds will boil, and thus turn into vapours, over a relatively

small temperature range (2 or 3°C); by carefully watching the temperature in the

distillation flask, it is possible to affect a reasonably good separation. As distillation

progresses, the concentration of the lowest boiling component will steadily decrease.

Eventually the temperature within the apparatus will begin to change; a pure compound

is no longer being distilled. The temperature will continue to increase until the boiling

point of the next-lowest-boiling compound is approached. When the temperature again

stabilizes, another pure fraction of the distillate can be collected. This fraction of distillate

will be primarily the compound that boils at the second lowest temperature. This process

can be repeated until all the fractions of the original mixture have been separated.

(i) What is the principle of distillation?

(ii) Which type of the solution can be separate by distillation process?

(iii) What is the function of condenser in distillation process?

(iv) How does simple distillation differ from fract​

Answer 1

Answer:

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