double salt

Quick Reference

A crystalline salt in which there are two different anions and/or cations. An example is the mineral dolomite, CaCO3.MgCO3, which contains a regular arrangement of Ca2+ and Mg2+ ions in its crystal lattice. Alums are double sulphates. Double salts only exist in the solid; when dissolved they act as a mixture of the two separate salts. Double oxides are similar.

Subjects: Chemistry.

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