Asked Mar 25, 2019

Oxygen gas is compressed in a piston-cylinder device from an initial state of 0.8 m3/kg and 20 degress C  to a fnal state of 0.1m3/kg and 300 degress C. Determine the entropy change of the oxygen during the process. Assume constant specific heats.


Expert Answer

Step 1

Obtain the mean temperature.


Step 2

Obtain the value of specific heat at constant volume for the mean temperature.

From thermodynamic tables,


Step 3

Obtain the value of gas constant for oxygen.



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