Question

What in ideal mixture? How does it differ from an ideal gas mixture? What about an ideal-dilute solution?

Answer 1

An ideal mixture is one which obeys Raoult's Law,

The basic law determining the behavior of a gas mixture is Dalton's law: Each individual gas behaves in a gas mixture as though it alone occupies the volume of the mixture at the mixture temperature.

Dalton's law can also be stated as follows:

The sum of the partial pressures of the ideal gases which are components of a gas mixture is equal to the total pressure of the mixture of gases:

These two terms has been frequently used in Physical Chemistry by Atkins. He describes Raoult's Law using ideal solution while Henry's law using ideal-dilute solution.

Raoult's Law only works for ideal solutions. An ideal solution is defined as one which obeys Raoult's Law. "An ideal solution shows thermodynamic mixing characteristics identical to those of ideal gas mixtures [except] ideal solutions have intermolecular interactions equal to those of the pure components