Answer
The heating curve of that process is represented by the drawing:
- The segment represented by "5" corresponds to the gas physical state, that occurs between 100 and 150$^{\circ}$ C.
Work Step by Step
You can use the Figure 3.8 (Page 81) as the basis to draw the heating curve.
Since the boiling point of water is at $100^{\circ}$, at any value above this one, water will occur as a gas.