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Evaporation

If are compre...

Question

If __________ are compressed slowly (temperature remaining constant) to half the initial volume, the vapour pressure will remain unchanged:

A

un-saturated vapours

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B

saturated liquid

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C

saturated vapours

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D

none of the above

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Solution

The correct option is D saturated vapours
Vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system.
So, vapour pressure of a liquid depends upon temperature only so it remain unchanged here.

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