Cation exchange is a cationic resin has positive ions built into its structure and therefore exchanges negative ions. In the cation exchange, the side groups are ionised acidic groups, such as (-SO3H, -COOH, -OH) to which cations H+ are attached. The exchange reaction is one in which different cations in the solution displace the H+ from the solid.
Generalic, Eni. "Cation exchange." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
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