Problem $5(10$ points$)-$ Entropy Change of Pure Substances

Water, initially a saturated liquid at $1$ MPa $,$ undergoes two reversible processes:

$1-2$: isobaric expansion to a saturated vapor

$2-3$ : an adiabatic process that brings the water to $120C$

A$.$ Draw these processes on a $T-$s diagram. Clearly indicate each state on your diagram and include arrows for each process.

B$.$ What is the quality at state $3?$

C$.$ What is the change in specific entropy from $1-3?$

D$.$ What is the net specific work for the combined processes?

E$.$ Based on your analysis, is isobaric phase change an internally reversible process? Hint: for an internally reversible process, $s_{12}={\displaystyle \underset{1}{\overset{2}{}}}\frac{q}{T}.$