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:

  1. Zeolite acts as ion exchange resin and its $Na^{+}$is exchanged with $H^{+}$and $Mg^{2+}$ ions present in hard water.


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