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Raoult's Law

LiquidVapor p...

Question

Liquid
Vapor pressure (mm Hg.), $25^{o} C$
A
20
B
35
C
56
D
112
E
224
In which of the liquids listed in the table above are the intermolecular forces of attraction the strongest?

A

A

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B

B

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C

C

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D

D

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E

E

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Solution

The correct option is B A
The liquid A, having lowest value of the vapour pressure is least volatile liquid. It has maximum boiling point and strongest intermolecular forces.

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Q. The intermolecular forces of attraction in liquids are:

Q. Pick out the wrong statement(s).
(i) Vapour pressure of a liquid is the measure of the strength of intermolecular attractive forces.
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(iii) Vapour pressure of all liquid is same at their freezing points.
(iv) Liquids with stronger intermolecular attractive forces are more viscous than those with weaker intermolecular force.

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Q. In the absence of intermolecular forces of attraction, the observed pressure

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