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anion exchange

noun
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Definition of 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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First Known Use of anion exchange

1931

in the meaning defined above

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