A liquid-liquid solution is called an ideal solution if
I. it obeys PV = nRT.
II. it obeys Raoult's law.
III. solute-solute, solvent-solvent, and solute-solvent interactions are very similar.
IV. solute-solute, solvent-solvent, and solute-solvent interactions are quite different.
A) II, IV
B) II, III
C) I, II
D) I, II, III
E) I, II, IV

Question

Quizplus · Accepted Answer

An ideal solution is defined as a liquid-liquid solution in which the solute-solute, solvent-solvent, and solute-solvent interactions are very similar. This means that the solution follows Raoult's law, which states that the vapor pressure of each component of an ideal solution is proportional to its mole fraction in the solution. Therefore, II and III are the correct options. Choice I is incorrect because PV = nRT is the equation of state for any gas, not for an ideal solution. Choice IV is also incorrect because an ideal solution has similar interactions between all components, not quite different as stated in option IV.

A Liquid-Liquid Solution Is Called an Ideal Solution If