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in States of Matter - Gas and Liquid by (49.3k points)

Why boiling point of liquid increases on increasing the pressure?

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The boiling point of a liquid is the temperature at which the vapour pressure of the liquid becomes equal to the atmospheric pressure. The vapour pressure of a liquid is also a function of the temperature. As the temperature increases the vapour pressure increases.

Now if we increase the external pressure, a higher temperature would be required so that the vapour pressure becomes equal to the external pressure and hence the boiling point of the liquid increases.

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