Question

Q7 (15 pts): Consider the following phase diagram of carbon: 106 SOUD (diamond) 105 LIQUID 104 Pressure (par) 103 SOUD (graphite) 102 GAS 10 6000 2000 4000 Temperature (0) a. [10 pts). Describe the phases, changes, names and types of the process(es) a carbon sample might undergo as it changes from point "b" to point "a". b. [5 pts). Under what conditions a carbon sample at point "a" can be changed into gas?

Answer 1

7) a. Phase b is gas from gas it will change to liquid this process is called condensation. After condensation phase will change from liquid to solid this process is called freezing in which it will be solid at point a .

b. Under low pressure and high temperature the point a can be changed into gas phase.