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How vapour pressure of liquid is related...

How vapour pressure of liquid is related to (i) temperature (ii) nature of liquid, (iii) boiling point (iv) atmospheric pressure?

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(i)Vapour pressure is directly proportinal to temperature.
(ii) If intermolecular force of attraction is less in the liquid, its vapour pressure will be high.
(iii) Higher vapour pressure, lower will be boiling point.
(iv) If atmospheric pressure is low, boiling point will be less and higher will be the vapour pressure.
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