The triple point temperature of bismuth is 544.5 K and the normal boiling point is 1832 K. Imagine that a 1.00 mol sample of bismuth is heated at a constant rate of 1.00 kJ min^-1 in an apparatus in which the sample is maintained under a constant pressure of 1 atm. In the manner shown in Figure 12-24 and as much to scale as possible, that is in terms of times and temperatures, sketch the heating curve that would be obtained in heating the sample from 300 K to 2000 K. Use the following data. Δ_fusH = 10.9 kJ mol^-1 for Bi(s); Δ_vapH = 151.5 kJ mol^-1 for Bi(l); average molar heat capacities, in J mol^-1 K^-1, 28 for Bi(s), 31 for Bi(l), and 21 for Bi(g).

Figure 12-24

Transcribed Image Text:

Temperature (not to scale) 0 °C (s) (s) + (1) Time (not to scale)