Non ideal solutions exhibit either possitive (or) -ve deviations from Raoult's law. What are these deviations and why are they caused. Explain with one example for each type.

Which mixtures show positive deviations from Raoult's law? Why?

Which mixtures show negative deviations from Raoult's law? Why ?

What are the types of systems? Explain give one example each?

Mathematically, this from of the Raoult's can be given as: P_("total"=P_(1)^(0)X_(1)+P_(2)^(0)X_(2) . Solution which obey Raoult's law over the entire range of concentration are known as ideal solution . two types of deviation from Raoult's law, that is, positive and negative deviations are observed. Azeotrons arise due to very large deviation from Raoult's law. then which of the following are correct

What is meant by positive deviations from Raoult's law and how is the sign of Delta_("mix")H related to positive deviation from Raoult's law ?

What is meant by negative deviation from Raoult's law and how is the sign of Delta_("mix")H related to negative deviation from Raoult's law ?

Statement-1: Acetone + Carbon disulphide solution shows positive deviation from Raoult's law Statement-2 : Acetone + Aniline solution shows positive deviation from Raoult's law

Explain the causes for deviation for real gases from ideal behaviour.