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Existence of Metals

What is the f...

Question

What is the formula of Calgon?

A

{(N a P O_{3})}_{6}

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B

M g {(P O_{4})}_{2}

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C

N a_{3} P O_{4}

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D

M g S O_{4}

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Solution

The correct option is C ${(N a P O_{3})}_{6}$
Calgon is sodium hexametaphosphate (amorphous sodium polyphospate). Its formula is $(N a P O_{3})_{6}$ .

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Similar questions

M g S O_{4}

N H_{4} C l

are added along with

N a_{3} P O_{4}

, a white precipitate is formed. What is it?

Q. Permanent hardness of water can be removed by adding calgon

(N a P O_{3})_{6}

. This is an example of:

Q. Permanent hardness of water can be removed by adding calgon

(N a P O_{3})_{6}

. This is an example of:

Q. An industrial waste water is found to contain

8.2 % N a_{3} P O_{4}

12 % M g S O_{4}

by weight in solution. If

%

N a_{3} P O_{4}

M g S O_{4}

50

60

respectively then its normal boiling point is:

[K_{b} (H_{2} O) = 0.50 K k g m o l^{- 1}

Q. An industrial waste water is found to contain

8.2 % N a_{3} P O_{4}

12 % M g S O_{4}

by weight in solution. If

%

N a_{3} P O_{4}

M g S O_{4}

50

60

respectively then it’s normal boiling point (in

^{o} C

[k_{b} (H_{2} O) = 0.50 {K kg mol}^{- 1}

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