Temporary hardness maybe be removed from water by adding?

C a (O H)_{2}

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C a C O_{3}

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C a S O_{4}

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H C l

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Solution

The correct option is B $C a (O H)_{2}$
Temporary hardness is caused by dissolved calcium or magnesium hydrogencarbonate.
Some of the methods to remove hardness from water are:
Chemical Process of Boiling Hard Water
Adding Slaked Lime (Clark's Process)
Adding Washing Soda
Calgon Process
Ion Exchange Process
Using Ion Exchange Resins

Clark’s method: In this method calculated amount of lime is added to hard water. It precipitates out calcium carbonate and magnesium hydroxide which can be filtered off.
$C a (H C O_{3})_{2} + C a (O H)_{2} \to 2 C a C O_{3} (↓) + 2 H_{2} O$
$M g (H C O_{3})_{2} + C a (O H)_{2} \to 2 C a C O_{3} (↓) + M g (O H)_{2} (↓) + 2 H_{2} O$

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Similar questions

Temporary hardness may be removed from water by adding

C a^{2 +}

M g^{2 +}

C a (H C O_{3})_{2} + C a (O H)_{2} \to 2 C a C O_{3} ↓ + 2 H_{2} O

C a O

H_{2} O

C a (O H)_{2}

C a C O_{3}

C a O + H_{2} O \to C a (O H)_{2}

10

0.56

C a O

C a C O_{3}

x \times 10^{2}

x

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