Mathematically, this form of the Raoult’s law is stated
as:
0
0
total
1
2
2
1


p
p x
p x Solutions which obey Raoult’s law over the entire range
of concentration are called ideal solutions Two types of deviations from Raoult’s
law, called positive and negative deviations are observed Azeotropes arise due to
very large deviations from Raoult’s law