Why is it preferred standard state for the solvent in an ideal dilute solution Raoult's law of standard state?

Answer 1

In Raoult's law, the standard state for the solvent in an ideal dilute solution is preferred because it allows for a clear reference point when measuring the vapor pressure of the solvent. This standard state is typically defined as the pure solvent at a specified temperature and pressure, which simplifies the calculation of the solvent's partial vapor pressure in the solution. By using the standard state, the law effectively relates the mole fraction of the solvent in the solution to its vapor pressure, thereby facilitating accurate predictions of solution behavior. Additionally, it ensures that deviations from ideality can be assessed more easily.