Hydrogen And Its Compounds Question 47

Question: When zeolite (Hydrated sodium aluminium silicate) is treated with hard water the sodium ions are exchanged with

[DPMT 2000]

Options:

A) $ O{H^{-}} $ ions

B) $ SO_4^{2-} $ ions

C) $ C{a^{2+}} $ ions

D) $ {H^{+}} $ ions

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Answer:

Correct Answer: C

Solution:

$ \underset{Zeolite}{\mathop{Na_2Al_2Si_2O_8}}.xH_2O+C{a^{+2}}\to $

$ CaAl_2Si_2O_8.xH_2O+2N{a^{+}} $