Engineering Board Exam Reviewer · Thermodynamics · hard
One kilogram of saturated liquid water at 100 °C is completely vaporized at a constant pressure of 101.325 kPa. If vf = 0.001043 m3/kg and vg = 1.6729 m3/kg, how much boundary work is done?
- 169.5 kJ
- 2257.0 kJ
- 2087.6 kJ
- 169.4 kJ
Answer
D. 169.4 kJ
Solution
W = P(vg - vf) = 101.325(1.6729 - 0.001043) = 169.4 kJ.
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