CH1012
L1 /
‹#›
L1 /
13
NON-IDEAL SOLUTIONS
0 xA
1
T
(ii) DHsoln = +ve
0 xA
1
T
(iii) DHsoln = -ve
bp. curve
Vapour composition curve
pA > poAxA, pB > poBxB
- unfavourable
interaction
of the component liquids
of the component liquids
pA < poAxA, pB < poBxB
- favourable interaction of
the component liquids
the component liquids
Azeotropic mixture ( bp. const.)
eg.
ethanol / H2O 78oC
(4% H2O)
eg.
HCl / H2O
108oC
(80% H2O)
