Question

Write four conditions for ideal solutions.

Answer 1

1. Ideal solutions obey Raoult's law over the entire range of concentrations. 
2. No heat is evolved or absorbed when two components forming an ideal solution are mixed. Thus, the enthalpy of mixing is zero. `Delta_(mix) H = 0`
3. There is no volume change when two components forming an ideal solution are mixed. Thus, the volume of an ideal solution is equal to the sum of the volumes of two components taken for mixing. `Delta_(mix) V = 0`
4. In an ideal solution, solvent-solute, solute-solute, and solvent-solvent molecular interactions are comparable.