Raoult's Law

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Francois Raoult (1830 - 1901) was for some reason very interested in the vapour pressure of liquid mixtures. So here is his law:

The vapour pressure of a component of a liquid mixture is equal to the product of the mole fraction of that component and it's pure vapour pressure at a given temperature.

This is less than fascinating, but it can get you about 2-3 marks on an A-Level exam.

Can this knowledge ever be applied to a real or life-thretening situation? If you ever have to distill off one of the components of a liquid mixture to save your life, you can thank Francois Raoult.

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