Knaph

Solubility

Only so much of a substance dissolves in a given amount of solvent; once that much has, the solution is saturated and any more stays undissolved. The most that dissolves in 100 g of water at a given temperature is the substance's solubility, and it differs hugely between substances: about 200 g of sugar, under 40 g of table salt. Most solids dissolve more in warmer water, which a solubility graph shows, while gases dissolve less.

Depth 1 · Foundation

You know what a saturated solution is, can read a substance's solubility off a graph at a given temperature, and know that warming water lets more of most solids, but less of a gas, dissolve.

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