A cylinder/piston contains 1kg methane gas at 100 kPa, 20°C. The gas is compressed reversibly to a pressure of 800 kPa. Calculate the work required if the process is polytropic, with exponent n = 1.15.

A cylinder/piston contains 1kg methane gas at 100 kPa, 20°C. The gas

1.	A cylinder/piston contains 1kg methane gas at 100 kPa, 20°C. The gas is compressed reversibly to a pressure of 800 kPa. Calculate the work required if the process is polytropic, with exponent n = 1.15.
A.	-314.5 kJ
B.	-414.5 kJ
C.	-514.5 kJ
D.	-614.5 kJ
Answer» B. -414.5 kJ

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A cylinder/piston contains 1kg methane gas at 100 kPa, 20°C. The gas is compressed reversibly to a pressure of 800 kPa. Calculate the work required if the process is polytropic, with exponent n = 1.15.

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