A pure substance A has a liquid vapor pressure of 320 mm Hg at 125°C, 800 mm Hg at 150°C, and 60 mm Hg at the triple point, 85°C. The melting point of A decreases slightly as pressure increases.
(a) Sketch a phase diagram for A.
(b) From the phase diagram, estimate the boiling point.
(c) What changes occur when, at a constant pressure of 320 mm Hg, the temperature drops from 150°C to 100°C?
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