L1 /   
11
CH1012
2 COMPONENT SYSTEMS
2. Two component systems
- binary liquid mixtures
a) Completely miscible - forms 1 phase only
eg. C2H5OH / H2O;         benzene / toluene
b) Immiscible            - forms 2 phases
eg. CHCl3 / H2O;         oil / H2O;         Hg / H2O
c) Partially miscible   - forms 1 or 2 phases
If one component is in excess ® 1 phase
If comparable amounts of each ® 2 phases
eg. sat. soln. (i) H2O /ether or  (ii) ether/H2O