Raoult's law

[ rah-oolz ]
/ rɑˈulz /

noun Physical Chemistry.

the principle that the fraction by which the vapor pressure of a solvent is lowered by the addition of a nonvolatile, nonelectrolytic solute is equal to the mole fraction of the solute in the solution.

Origin of Raoult's law

1890–95; named after François Raoult (1830–1901), French chemist and physicist

Medical definitions for raoult's law

Raoult's law
[ rä-ōōlz ]

n.

The principle that the vapor pressure of a solution is equal to the vapor pressure of the pure solvent multiplied by the mole fraction of the solvent in the solution.