Question

Define Vapour Pressure And Factor affecting vapour pressure.​

Answer 1

$\huge\underline\green{\sf Vapour\: Pressure}$

At a constant temperature the pressure exerted by the vapour of a liquid on its surface when they (liquid and it's vapours) Are in equilibrium is known as Vapour Pressure.

FACTOR AFFECTING VAPOUR PRESSURE :-

1. Nature of Liquid .

2. Temperature.

Answer 2

Vapour pressure means pressure exerted by the vapors of a substance at a particular temperature.

Factors affecting vapor pressure are as follows:

• Temperature: Vapour pressure and temperature are related directly. As the temperature increases, vapor pressure also increases.
• Intermolecular force: It is the presence of force between the molecules. If this force increases, vapor pressure decreases.
• Presence of solute: If a solute is present in the liquid, its vapor pressure will be low as compared to a pure liquid.