Question

Consider an ideal gas that occupies 100 dm3 at a pressure of 3.00 bar. If the gas is compressed isothermally to a volume of 60 dm3 at a constant pressure of 5.00 bar followed by followed by another isothermal compression to 40 dm3 at a constant pressure of 7.50 bar (Figure 5.4). Compare the result with the work of compressing the gas isothermally and reversibly from 100 dm3 to 40 dm3 . Compare both results to the one obtained in the previous problem.

This is the previous problem. [Consider an ideal gas that occupies 100 dm3 at a pressure of 3.00 bar. If the gas is compressed isothermally at a constant external pressure, Pext, so that the final volume is 40 dm3 , calculate the smallest value of Pext. Calculate the work involved using this external pressure]

Answer 1