Question

explain the effect of pressure on boiling point of water​

Answer 1

The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point. In an open system this can be visualized as air molecules colliding with the surface of the liquid and creating pressure.

Answer 2

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As the pressure applied to the liquid surface is increased, the energy needed for the liquid molecules to expand to gas phase also increases. Hence, a higher temperature is required to change liquid to gas phase. So, boiling point of liquid rises on increasing pressure.