Wednesday, March 16, 2011

HW 7B-11 - Entropy Change and Boundary Work for the Isobaric Expansion of Water - 10 pts

Electrical work is done by an electrical resistance heater on H2O contained in an insulated piston-and-cylinder device. The cylinder initially contains 2.4 L of saturated liquid water at a pressure of 500 kPa. Assuming the piston moves freely, determine the total entropy change of the H2O during a process in which 1875 kJ of heat is transferred into the water. What is the boundary work for this process?

For hints and answers visit: http://www.LearnThermo.com/T1-tutorial/ch07/lesson-B/pg20.php#P7B11

No comments: