A frictionless piston-cylinder device contains 1 m3 of saturated steam at 100oC. During a constant pressure process,

Question:

A frictionless piston-cylinder device contains 1 m3 of saturated steam at 100oC. During a constant pressure process, 700 kJ of heat is transferred to the surrounding air at 25oC. As a result, part of the water vapor contained in the cylinder condenses. Determine
(a) The entropy change (ΔS) of the water.
(b) The total entropy generated (Sgen) during this heat transfer process.