anion exchange

anion exchange
: a chemical process in which anions are exchanged or removed:
a. : ion exchange in which one anion (as chloride or hydroxide) is substituted for one or more other anions (as sulfate)
b. : a process in which anions in the form of acids are adsorbed by a basic substance

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anion exchange,
ion exchange in which the negative ions are exchanged.

Useful english dictionary. 2012.

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