Raoult's law (volatile solvent, non-volatile solute) (Vapour pressure of solvent above solution = mole fraction of solvent × pure solvent vapour)
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Vapour pressure of solvent above solution = mole fraction of solvent × pure solvent vapour pressure
What each symbol means
| Symbol | What it stands for |
|---|---|
| P | Vapour pressure of solvent over solution |
| P° | Vapour pressure of pure solvent at same T |
| x_solvent | Mole fraction of solvent in liquid |
When to use this
Ideal solution; solute is non-volatile; solvent follows Raoult’s law.