4.1. Basic principles
            4.1.3. Gas laws
4.1.3.2. Partial pressure

Partial pressure

Effect of temperature

Partial pressure decreases as temperature decreases.

When temperature decreases
--> kinetic energy of the molecules decreases
--> less likely to overcome Van der Waal forces
--> stay in solution more
--> less partial pressure

Dalton's law of partial pressures

In a mixture of gases, the pressure exerted by each gas is the same as that which it would exert if it alone occupied the container.

Henry's Law

At a particular temperature, the amount of a given gas dissolved in a given liquid is directly proportional to the partial pressure of the gas in equilibrium at the surface of the liquid.

Thus,

Keywords:  Dalton's law of partial pressures ; Henry's law ; Partial pressure
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Created20050528
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