Benzaldehyde, C6H5CHO}, has a normal boiling point of 179.0 C and a critical point at 422 C and 45.9 atm.
Using a phase diagram, estimate its vapor pressure at 125 Degrees
(I'm putting this back up again. Since I still didn't understand it but the answer to it was 171 torr.)
1 answer
Without a phase diagram I can't help. But it should be just reading the vapor pressure from the graph.