Salt

: This article is about the general chemical term salt. For the everyday meaning, see edible salt or its main ingredient, sodium chloride. For other meanings of the word salt, see salt (disambiguation).

Formation

Salts are formed by a chemical reaction between:

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• a base and an acid, e.g. NH₃ + HCl → NH_4Cl
• a metal and an acid, e.g. Mg + H₂SO₄ → MgSO₄ + H₂

Salts can also form if solutions of different salts are mixed, their ions recombine, and the new salt is insoluble and precipitates (see: Solubility equilibrium).

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