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Formation of Precipitate

Which of the ...

Question

Which of the following compounds is used for water softening?

A

N a_{3} P O_{4}

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B

N a_{6} P_{6} O_{1} 8

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C

N a_{2} H P O_{4}

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D

C a_{3} (P O_{4})_{2}

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Solution

The correct option is B $N a_{6} P_{6} O_{1} 8$
Sodium hexametaphosphate $(N a_{6} P_{6} O_{1} 8)$ , commercially called 'Calgon' is used for water softening.

Hence, option (C) is correct.

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Question 16

Which of the following compounds is used for water softening ?

(a) $C a_{3} (P O_{4})_{2}$ (b) $N a_{3} P O_{4}$ (c) $N a_{6} P_{6} O_{1} 8$ (d) $N a_{2} H P O_{4}$

Q. The sodium compound which is used for softening hard water:

Q. Which of the following is used in softening of water?

Q. Question 3
Name the sodium compound which is used for softening hard water.

Q. In the Calgon process of softening of water, which of the following is used?

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