L1 /   
4
CH1012
1 COMPONENT SYSTEMS II.h
Vapour Pressure  increases with T.
TF = freezing point
TB = boiling point 
 (V.P. = external pressure)
Cairns (0m,760 torr)
= 100oC
Bartle Frere (1615m,613 torr)
= 94oC
liquid
phase boundary
 
      gas