单词	undissociated
释义	undissociated /ˌʌndɪˈsəɪʃɪeɪtɪd / adjective Chemistry (Of a molecule) not dissociated into oppositely charged ions.However, if the acid is titrated against a dilute base, the undissociated molecules progressively dissociate and eventually the total hydrogen ion concentration can be found.... Weak acids vary in strength from those which exist primarily as hydrated molecules and only ionize to a very small extent to those which ionize substantially and are in equilibrium with only a small amount of undissociated molecules. At pH 8.9, it was a mixture of undissociated molecules, monoanion and dianion.
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