Bromine, Br2, has a triple point at 7.3°C and 44 mmHg and a critical point at 315°C and 102 atm. The density of the solid is 3.4 g/cm3, and the density of the liquid is 3.1 g/cm3. Sketch a rough phase diagram of bromine, labeling all important features. Circle the correct word in each of the following sentences (and explain your answers).
a. Bromine vapor at 40 mmHg condenses to the (liquid, solid) when cooled sufficiently.
b. Bromine vapor at 400 mmHg condenses to the (liquid, solid) when cooled sufficiently.