There will be no change in enthalpy when the two components are mixed, i.e. ΔH_mixing = 0

Ideal solution obey Raoult’s law under all conditions of temperature and concentrations

There will be no change in volume on mixing the components, i.e. ΔV_mixing = 0

There will be some change in volume on mixing the components, i.e. ΔV_mix ≠ 0