P and Q are miscible liquids that combine to form a mixture S- The boiling point of P is 78 - C and that of Q is 100 - C- -1- Identify the process to be used to separate S into its original liquids-2- Mention the more volatile component amongst the two-

(i) The boiling point of liquid nbsp;P is 78 ^∘ C and that of liquid Q is 100 ^∘ C. The difference in the boiling points of the nbsp;liquids P and Q: 10 ...

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Standard VII

Physics

Melting and Boiling Point

P and Q are m...

Question

P and Q are miscible liquids that combine to form a mixture S. The boiling point of P is $78^{\circ} C$ and that of Q is $100^{\circ} C$ .
1. Identify the process to be used to separate S into its original liquids.
2. Mention the more volatile component amongst the two.

Fractional distillation
Volatile component - P

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Fractional distillation
Volatile component - Q

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Simple distillation
Volatile component - P

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Simple distillation
Volatile component - Q

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Solution

The correct option is A Fractional distillation
Volatile component - P
(i) The boiling point of liquid P is $78^{\circ} C$ and that of liquid Q is $100^{\circ} C$ .
The difference in the boiling points of the liquids P and Q:
$100 - 78 = 22^{\circ} C$

Fractional distillation is used to separate a mixture of miscible liquids that have a difference in boiling points of less than $25^{\circ} C$ .

(ii) A more volatile liquid is the one that has a lower boiling point. The more volatile component rises to the top of the fractionating column while the less volatile component is retained at the bottom of the column.

Thus, a. is the correct option.

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P and Q are miscible liquids that combine to form a mixture S. The boiling point of P is 78∘C and that of Q is 100∘C. ​ 1. Identify the process to be used to separate S into its original liquids. 2. Mention the more volatile component amongst the two.

P and Q are miscible liquids that combine to form a mixture S. The boiling point of P is $78^{\circ} C$ and that of Q is $100^{\circ} C$ .
1. Identify the process to be used to separate S into its original liquids.
2. Mention the more volatile component amongst the two.