Use the phase diagram for carbon in Exercise 5B.4 (a) To describe the phase transitions that carbon

Question:

Use the phase diagram for carbon in Exercise 5B.4

(a) To describe the phase transitions that carbon would undergo if the pressure on a sample is increased at a constant temperature of 2000 K from 100 atm to 1 * 10⁶ atm;

(b) To rank the diamond, graphite, and liquid phases of carbon in order of increasing density.

Exercise 5B.4

The phase diagram for carbon, shown here, indicates the extreme conditions that are needed to form diamonds from graphite.
Pressure, P/GPa 10 000 atm 30 25 20 15 10 5 1 1 I 1 Diamond Liquid Graphite 2 3 4 Temperature, T/(1000 K)