An irreversible engine operating between the temperatures of 550 K and 300 K extracts 1200 J of heat from the hot reservoir and produces 450 J of work. How much entropy is created in the process?
A) 0.32 J/K
B) 0.68 J/K
C) 0.44 J/K
D) 0.73 J/K
E) 0 J/K

Question

Quizplus · Accepted Answer

Entropy created in the process is given by:ΔS = Qh/Th - Qc/Tc= 1200 J / 550 K - 450 J / 300 K= 0.32 J/K

An Irreversible Engine Operating Between the Temperatures of 550 K