Below is a plot of the final volume for irreversible adiabatic compression of an

Question

Below is a plot of the final volume for irreversible adiabatic compression of an ideal gas as a function of the initial

pressure. The initial volume is 24.9 L, and as the initial pressure decreases, the number of moles decrease. The

external pressure (and therefor the final pressure) is 4.0 bar. As the initial pressure decreases, the final volume

reaches a constant value. Can you present a qualitative explanation for this behavior? That is, why does the final

volume not decrease when fewer moles are compressed when the initial pressure is below 0.1 bar?

Explanation / Answer

In this adiabatic irreversible compression the enegy released when compression takes place can be converted as a work done

in this process there is no change in the volume of a gas because it is a isochoricprocess.(DV is not equal to zero)

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