Describe an experiment that can be used to demonstrate Effects of reduced pressure on boiling point.

Describe an experiment that can be used to demonstrate Effects of reduced pressure on boiling point.

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Water is first heated to boiling. The flask is then turned upside down and cold water poured over it. It would be observed that when heating stops, boiling also stops. When cold water is poured over the flask, the water inside the flask begins boiling again although its temperature is below the boiling point.
The cold water condenses the steam reducing vapour pressure inside in the flask. Hence a decrease in pressure lowers the boiling point of a liquid.

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sharon kalunda answered the question on April 24, 2019 at 10:04

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