One mole of an ideal gas, CP=(7/2)R and CV=(5/2)R, is compressed adiabatically in a piston/cylinder device from 2 bar and 25C to 7 bar. The process is irreversible and requires 25% more work than a reversible, adiabatic compression from the same initial state to the same final pressure. What is the entropy change of the gas? Take R=8.314Jmol1K1. The entropy change of the gas is Jmol1K1