When zeolite (hydrated sodium aluminium silicate) is treated with hard water, the sodium ions are exchanged with
When zeolite (hydrated sodium aluminium silicate) is treated with hard water, the sodium ions are exchanged with
(a) H+ ions
(b) Ca2+ ions
(c) SO42- ions
(d) OH- ions
Correct answer: (b) Ca2+ ions
Explanation:
Na zeolite + CaCl2 → Ca zeolite + 2NaCl
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