Step 1: Understand what an ideal solution is. An ideal solution is a mixture of two or more substances that behaves in a predictable way according to certain rules.
Step 2: Learn about enthalpy of mixing. This is the heat change that occurs when two substances are mixed together.
Step 3: In an ideal solution, the enthalpy of mixing is zero. This means that when you mix the substances, there is no heat absorbed or released.
Step 4: Realize that this zero enthalpy of mixing indicates that the interactions between the molecules of the different substances are similar to the interactions between the molecules of the same substance.
