Q1 of 23 Page 152

What will be the minimum pressure required to compress 500 dm3 of air at 1 bar to 200 dm3 at 30°C?

Given that P1 = 1 bar.

V1 = 500 dm3


V2 = 200dm3


As temperature is constant, the final pressure can be calculated by Boyle's law,


P1V1 = P2V2


⇒


⇒ P2 =


⇒ P2 = 2.5 bar


Therefore, minimum pressure required is 2.5 bar.


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