Refer to Figure 12.36 to answer each question.

a. A sample of steam begins on the line segment labeled 5 on the graph. Is heat absorbed or released in moving from the line segment labeled 5 to the line segment labeled 3? What is the sign of q for this change?

b. In moving from left to right along the line segment labeled 2 on the graph, heat is absorbed, but the temperature remains constant. Where does the heat go?

c. How would the graph change if it were for another substance (other than water)?

Transcribed Image Text:

Temperature (°C) 125 100 Ice warming 0.941 kJ/mol 50- 1 I T 25-point 0. I -25- I 0 1 Melting! Ice melting to liquid 6.02 kJ/mol Bowling point 10 20 A FIGURE 12.36 Heating Curve for Water Water Liquid water warming 7.52 kJ/mol 30 40 Heat added (kymol) Liquid water vaporizing to steam 40.7 kJ/mol 50 5 Steam warming 0.905 kW/mol -8 Vapor 70