CBSE Class 9 Answered
why does the boiling point of a liquid gets lowered when the pressure is reduced?
Asked by rajavi | 29 Jun, 2010, 12:00: AM
Expert Answer
The temperature at which the vapour pressure of a liquid becomes equal to the atmospheric pressure is its ‘Boiling point’. Therefore boiling point depends upon the atmospheric pressure and it changes with the change in the pressure above the liquid.
As the atmospheric pressure is reduced, it is easy to heat the liquid to a lower temperature to make its vapour pressure equal to atmospheric pressure. Thus, the boiling point is lowered.
Answered by | 14 Jul, 2010, 03:47: PM
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