A sample of a monatomic ideal gas is contained in a cylinder with a piston. Arrows A through E represent isobaric, isothermal, adiabatic, and isovolumetric processes that the sample can undergo. In each process except D, the volume changes by a factor of 2. All five processes are reversible. Rank the processes according to the change in entropy of the gas from the largest positive value to the largest-magnitude negative value. In your rankings, display any cases of equality.
http://www.webassign.net/serpse8/22-oq-009.gif

Question

A sample of a monatomic ideal gas is contained in a cylinder with a piston. Arrows A through E represent isobaric, isothermal, adiabatic, and isovolumetric processes that the sample can undergo. In each process except D, the volume changes by a factor of 2. All five processes are reversible. Rank the processes according to the change in entropy of the gas from the largest positive value to the largest-magnitude negative value. In your rankings, display any cases of equality. 
http://www.webassign.net/serpse8/22-oq-009.gif