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Dissociation. The degree to which compounds, such as acids (q.v.), alkalis (q.v.), and salts (q.v.), separate into positively and negatively charged constituents or ions (q.v.) when in solution (q.v.), so that the latter becomes a conductor of electric current. The degree of dissociation of acids and alkalis is indicative of their reactivity and differentiates strong acids and alkalis from their weaker counterparts.