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14/12/2021 2:08 pm
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When a sample of hard water is passed through the layer of sodium zeolite resulting which of the following ions will not be present in the resulting sample of water obtained?
(a) Mg2+ and Ca2+
(b) Ca2+ and Na+
(c) Mg2+ and CO32-
(d) CO32- and Cl-
1 Answer
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14/12/2021 2:10 pm
Correct answer: (a) Mg2+ and Ca2+
Explanation:
As Na+ ions in sodium zeolite are replaced by Ca2+ and Mg2+ ions present in hard water, these two ions will not be present.