Chapter 15.7, Problem 125FEP

An equimolar mixture of carbon dioxide and water vapor at 1 atm and 60°C enters a dehumidifying section where all of the water vapor is condensed and removed from the mixture, and the carbon dioxide leaves at 1 atm and 60°C. The entropy change of carbon dioxide in the dehumidifying section is

(a)

–2.8 kJ/kg·K

(b)

–0.13 kJ/kg·K

(c)

0

(d)

0.13 kJ/kg·K

(e)

2.8 kJ/kg·K