Interpretation: The figure representing the phase diagram of pure solvent and solution having non-volatile solute is given. An explanation for the change in the vapor pressure of the solution due to the presence of non-volatile solute that leads to lowering of melting point and increase in boiling point is to be stated.
Concept introduction: Those solutions that obey Raoult’s law under all conditions of temperature and pressure are called ideal solutions while those solutions that do not obey Raoult’s law under all conditions of temperature and pressure are called non-ideal solutions.
To determine: An explanation for the change in the vapor pressure of the solution due to the presence of non-volatile solute that leads to lowering of melting point and increase in boiling point.
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