Solubility of solid substances in water

Due to its dipole character, water is a good solvent of ionic compounds and is particularly suitable for the formation of addition compounds with ionic substances or with substances having a dipole character (Fig. 3.9). The 

The solubility of substances in water is given in different terms, usually as g or mg of substance per 100 g or 1 litre of water. The dependence of the solubility of substances on temperature is expressed graphically by so-called solubility curves. Some of characteristic solubility curves are shown 

The solubility curves of the substances whose solubility changes irregularly with the temperature are irregular. 

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