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2006 D. / S\"), 100 FIGURE 9.2 A plot of the melting point of benze as a functio

ID: 560696 • Letter: 2

Question

2006 D. / S"), 100 FIGURE 9.2 A plot of the melting point of benze as a function of pressure. Notice that the melting point increases slowly with pressure. (Note that the scales of the horizontal axes in Figures 9.2 and 9.3 are very different.) 10000 5000 P/ atm 110 7 °C tv ap FIGURE 9.3 A plot of the boiling point of benzene as a function of pressure. Notice til the boiling point depends strongly o the pressure. (Note that the scales horizontal axes in Figures 9.2 1000 2000 scales of the P/ torr Igures 9.2 and 9.3 are different.)

Explanation / Answer

using graph:

a)

Melting point at P = 5000 atm

Tfus --> 110°C approx

b)

at P = 100 torr, find Tvap

approx T = 0°C