When zeolite (hydrated sodium aluminium silicate) is treated with hard water, sodium ions are exchanged with:

H^{+}

ions

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C a^{2 +}

ions

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S O_{4}^{2 -}

ions

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O H^{-}

ions

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Solution

The correct option is B $C a^{2 +}$ ions
When zeolite (hydrated sodium aluminium silicate) is treated with hard water, sodium ions are exchanged with $C a^{2 +}$ ions. This removes the hardness of the water.

$N a_{2} O . A l_{2} O_{3} . n S i O_{2} . m H_{2} O + C a S O_{4} ⇌ C a O . A l_{2} O_{3} . n S i O_{2} . m H_{2} O + N a_{2} S O_{4}$

Thus, zeolites act as water softeners.

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Similar questions

When zeolite, which is hydrated sodium aluminimum silicate is treated with hard water, the sodium iions are exchanged with which of the following ion(s)?
(a) $H^{+}$ ions (b) $M g^{2 +}$ ions (c) $C a^{2 +}$ ions (d) $S O_{4}^{2 -}$

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

Q. When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water, the sodium ions are exchanged with :

Q. When zeolite which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions are exchanged with:

Q. When hydrated sodium aluminum silicate, which is zeolite, is treated with hard water, the sodium ions are exchanged with :

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When zeolite (hydrated sodium aluminium silicate) is treated with hard water, sodium ions are exchanged with:

The correct option is B Ca2+ ionsWhen zeolite (hydrated sodium aluminium silicate) is treated with hard water, sodium ions are exchanged with Ca2+ ions. This removes the hardness of the water.Na2O.Al2O3.nSiO2.mH2O+CaSO4⇌CaO.Al2O3.nSiO2.mH2O+Na2SO4Thus, zeolites act as water softeners.