Physics, asked by mukeshkant48, 10 months ago

what Is vapour pressure​

Answers

Answered by BusyPooH
1

Answer:

Explanation:

Vapour pressure is the pressure exerted by the vapours of a liquid on the walls of the container in which it is enclosed.

Answered by anjali30703
11

Answer:

VAPOUR PRESSURE

The pressure exerted by vapour on the surface of liquid when they are in equilibrium is known as vapour pressure.

Factors affecting vapour pressure :

(1.) Temperature

vapour \: pressure \: (v.p) \:  \alpha  \: temperture

Vapour pressure is directly proportional to the temperature.

Clausius clapeyron equation

ln P2/P1 = ∆Hvap/R (1/T1 - 1/T2)

Here,

P1 and P2 are the vapour pressure at T1 and T2 respectively.

T is the temperature in Kelvin.

ln is the natural log.

R is the gas constant (8.314 J/K mol)

∆Hvap is the molar heat of vaporization.

(2.)Nature of liquid

  • If the intermolecular forces of liquid decreases.Then, vapour pressure increases.

  • Those liquid which have lower boiling point have higher vapour pressure.
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