Relative lowering of vapour pressure ((P° − P)/P° = mole fraction of non-volatile solute (ideal dilute))
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(P° − P)/P° = mole fraction of non-volatile solute (ideal dilute)
What each symbol means
| Symbol | What it stands for |
|---|---|
| P | Vapour pressure over solution |
| P° | Vapour pressure of pure solvent |
| x_solute | Mole fraction of non-volatile solute |
When to use this
Ideal solution; non-volatile solute; solvent follows Raoult.