Question

Which of the following condition is not satisfied by an ideal solution?
(a) ΔHmixing = 0
(b) ΔVmixing = 0
(c) Raoult’s Law is obeyed
(d) Formation of an azeotropic mixture

Answer 1

Answer:

option d

Explanation:

For an ideal solution

Δ mixing H=0 ;

Δ mixing V=0 and

it should obey Raoult's law.

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Answer 2

The following condition that is not satisfied by an ideal solution is (d) the formation of an azeotropic mixture.

• The ideal solution is a solution in which intermolecular forces or pressure before and after mixing are the same.
• In an ideal solution, no change in volume occurs and also enthalpy change is zero as no release or absorption of heat after mixing.
• The ideal solution is homogeneous so, it follows Raoult's Law in all the ranges of temperature and pressure.
• In a non-ideal solution, there is heterogeneity and two types of solutions are defined here. first is positive deviation and the second is negative deviation.
• The non-ideal solution forms the azeotropic mixture. in this type of solution boiling point after mixing is increased or decreased than both the mixing components.