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Equation of the gas state processes

Problem 2.9

A chamber of volume V=87V=87 l \mathrm{l} is evacuated by a pump whose evacuation rate (see Note to the foregoing problem) equals C=10C = 10 l/s. \mathrm{l} / \mathrm{s} . How soon will the pressure in the chamber decrease by η=1000\eta=1000 times?

Reveal Answer
t=(V/C)ln⁡η=1.0 mint=(V / C) \ln \eta=1.0 \mathrm{~min}
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