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Hardness of Water and Treatment

The temporary...

Question

The temporary hardness of water is due to:

C a (H C O_{3})_{2}

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N a C l

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N a_{2} S O_{4}

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C a C l_{2}

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Solution

The correct option is A $C a (H C O_{3})_{2}$
Temporary hardness is caused by bicarbonates of calcium and magnesium. $C a (H C O_{3})_{2}$ is reponsible for temporary hardness of water.

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10

[C a (H C O_{3})_{2}]

0.56

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What is the weight of $C a (O H)_{2}$ required for $10$ litres of water to remove temporary hardness of $100$ ppm due to $C a (H C O_{3})_{2}$ ?

C a C O_{3}

C a C O_{3}

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C a (H C O_{3})_{2} + C a O ⟶ 2 C a C O_{3} + H_{2} O

C a (H C O_{3})_{2}

C a C O_{3}

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