A gas is enclosed in a vessel at a constant temperature at a pressure of $5$ atmosphere and volume $4$ litre. Due to a leakage in the vessel, after some time, the pressure is reduced to $4$ atmosphere. As a result, the
Avolume of the gas decreased by $20\%$
Baverage $K.E$. of gas molecule decreases by $20\%$
C$20\%$ of the gas escaped due to the leakage
D$25\% $ of the gas escaped due to the leakage
Medium
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C$20\%$ of the gas escaped due to the leakage
c $n^{\prime}=\frac{P^{\prime}}{P} \times n=\frac{4}{5} \times n=0.8 n$
Thus amount of gas escaped is $n-0.8 n=0.2 n$ or $20 \%$
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