Examine the heating curve for water in Section 12.7 (Figure 12.36). If heat is added to the
Question:
Examine the heating curve for water in Section 12.7 (Figure 12.36). If heat is added to the water at a constant rate, which of the three segments in which temperature is rising will have the least steep slope? Why?
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Temperature (°C) 125 100 75 Ice warming 0.941 kJ/mol 1 I T 25-point 50- 0. -25 I 0 T Melting! Ice melting to liquid 6.02 kJ/mol Boiling 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 Steam warming 0.905 kJ/mol -8 Vapor 70
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