ChemistryWaterJAMB
Which process exchanges the Ca²⁺ and Mg²⁺ ions in hard water for Na⁺ ions?
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Answer: A. passing the water through a permutit (ion-exchange) column
The resin holds the hardness ions and releases sodium ions.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.