The image below shows the phase diagram of bromine, which exists as a red liquid at room temperature and pressure. Use this phase diagram to answer the questions (letters a through e).
a) Label the different regions of this phase diagram as solid, liquid, and gas.
b) What is the normal boiling point of this substance?
c) Indicate the conditions of the triple point of this substance.
d) What is the phase of this substance at a pressure of 20 kPa and 10°C?
e) If a sample of bromine is at an initial pressure of 95 kPa and an initial temperature of 20°C, what phase change(s) occur as the sample is warmed to 60°C while maintaining the pressure? Indicate the temperature value for any phase changes.