A pure substance A has a liquid vapor pressure of 800 mm Hg at 150°C, 320 mm Hg at 125°C, and 60 mm Hg at the triple point, 85°C. The melting point of A decrease slightly as pressure increases.
1. Draw a phase diagram for A
2. Calculate the boiling point from the phase diagram.
3. Explain what changes occur when, at a constant pressure of 320 mm Hg, the temperature drops from150°C to 100°C?