sblock Elements - Result Question 33
####43. When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water, the sodium ions are exchanged with
(1990, 1M)
(a) $H^{+}$ions
(b) $SO _4^{2-}$ ions
(c) $Mg^{2+}$ ions
(d) $OH^{-}$ions
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Answer:
Correct Answer: 43. (a, d)
Solution:
- Zeolite acts as ion exchange resin and its $Na^{+}$is exchanged with $H^{+}$and $Mg^{2+}$ ions present in hard water.
