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Ammonia

A few drops o...

Question

A few drops of concentrated ammonia solution added to a calcium bicarbonate solution causes a white precipitate. The precipitate formed is:

A

C a C O_{3}

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B

M g C O_{3}

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C

K_{2} C O_{3}

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D

M g S O_{4}

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Solution

The correct option is A $C a C O_{3}$
A few drops of concentrated ammonia solution added to a calcium bicarbonate solution causes formation of calcium carbonate white precipitate .
$C a (H C O_{3})_{2} + 2 N H_{3} ⟶ C a C O_{3} ↓ w h i t e p p t + (N H_{4})_{2} C O_{3}$
Ammonia oxidize bicarbonate to carbonate.

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