Question

An isobaric steam generating process starts with saturated liquid at 20 psia. The change in entropy is equal to the initial entropy. What is the change in enthalpy during the process? (Hint: not all of the liquid is vaporized)
A. -230.4 Btu/lbm
B. -196.2 Btu/lbm
C. 196.2 Btu/lbm
D. 230.4 Btu/lbm

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