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Chemistry-

General

Easy

Question

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

$O H^{-}$ ions
$S O_{4}^{2 -}$ ions
$C a^{2 +}$ ions
$H^{+}$ ions

The correct answer is: $C a to the power of 2 plus end exponent$ ions

$stack N a subscript 2 end subscript A l subscript 2 end subscript S i subscript 2 end subscript O subscript 8 end subscript with text Zeolite end text below. x H subscript 2 end subscript O plus C a to the power of plus 2 end exponent rightwards arrow$
$C a A l subscript 2 end subscript S i subscript 2 end subscript O subscript 8 end subscript. x H subscript 2 end subscript O plus 2 N a to the power of plus end exponent$

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