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

Question

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Answer 1

Hint: Zeolites act as water softeners that remove mineral ions from them.

Correct Answer: $B$

Explanation :
In the question, we are given hydrated sodium aluminium silicate, which is a zeolite.
Now it is asked that when sodium aluminium silicate is heated with hard water then sodium ions are exchanged by which ion.
The reaction between sodium aluminium silicate with hard water is as follows:

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

Here we can see that sodium ions are exchanged with $C a^{2 +}$ ions. This removes the hardness of the water.
Hence, during the reaction of zeolite i.e. sodium aluminium silicate with hard water the sodium ion of zeolite, will be exchanged with calcium and magnesium ions.

So option $B$ i.e. $C a^{2 +}$ is correct.

Answer 2

Hint: Zeolites act as water softeners that remove mineral ions from them.

Correct Answer: $B$

Explanation :

In the question, we are given hydrated sodium aluminium silicate, which is a zeolite.

Now it is asked that when sodium aluminium silicate is heated with hard water then sodium ions are exchanged by which ion.

The reaction between sodium aluminium silicate with hard water is as follows:

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}

Here we can see that sodium ions are exchanged with

C a^{2 +}

ions. This removes the hardness of the water.

Hence, during the reaction of zeolite i.e. sodium aluminium silicate with hard water the sodium ion of zeolite, will be exchanged with calcium and magnesium ions.

So option

B

i.e.

C a^{2 +}

is correct.

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

$H^{+}$ ions

$C a^{2 +}$ ions

$S O_{4}^{2 -}$ ions

$O H^{-}$ ions

The formula for sodium zeolite which is used in permutit process for softening water is :

When zeolite is treated with hard water the sodium ion are exchanged with:

The exhausted permutit is regenerated by treating sodium hydroxide solution in Clark's method for removing permanent hardness.

The ion exchange resin which remove metal ions from hard water consist of giant organic molecule containing :

Zeolite is artificially prepared silicate of:

Revise with Concepts

Silicon Dioxide

Silicones

Silicates And Zeolites

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

H+ ions

Ca2+ ions

SO42−​ ions

OH− ions

The formula for sodium zeolite which is used in permutit process for softening water is :

When zeolite is treated with hard water the sodium ion are exchanged with:

The exhausted permutit is regenerated by treating sodium hydroxide solution in Clark's method for removing permanent hardness.

The ion exchange resin which remove metal ions from hard water consist of giant organic molecule containing :

Zeolite is artificially prepared silicate of:

Revise with Concepts

Silicon Dioxide

Silicones

Silicates And Zeolites

$H^{+}$ ions

$C a^{2 +}$ ions

$S O_{4}^{2 -}$ ions

$O H^{-}$ ions