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 DIFFERENCE BETWEEN VAPOUR PRESSURE 7 SURFACE TENSION

Vapour pressure of a liquid at any temperature can be defined as the pressure exerted by the vapours of the liquid in equilibrium with the liquid itself. The vapour pressure of any liquid depends upon the nature of liquid and the temperature.

SURFACE TENSION  is a contractive tendency of the surface of a liquid that allows it to resist an external force. This property is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids. For example, the floating of some objects on the surface of water, even though they are denser than water. In other words, surface tension can be defined as the tension on the surface of a liquid due to the cohesive force on the molecules of the surface. It results from the force of attraction between the molecules of the liquid.

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VAPOR PRESSURE is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. The vapor pressure is an indication of a liquid's evaporation rate. It relates to the tendency of particles to escape from the liquid (or a solid).

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VAPOUR PRESSURE:vapour pressure of a liquid is defined as the pressure exerted by the vapour of the liquid in equilibrium with liquid at that temp.it depend on nature of liquid, temp.

SURFACE TENSION:surface tension is the force per unit length acting perpendicular to the tangent line drawn on the surface of the liquid . 

(when liquid is taken ina container surface molecule is undetension due to imbalance force.the bulk molecule have balanced force in all direction) 

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