When $H g C l_{2}$ reacts with $C O_{3}^{2 -}$ anion, then :

Reddish brown precipitate of

H g C O_{3} \cdot 2 H g O

is formed

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Brownish red precipitate of

H g C O_{3} \cdot 3 H g O

is formed

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Reddish brown precipitate of

H g C O_{3} \cdot 3 H g O

is formed

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Blue ppt. of is

H g_{4} O_{4} C O_{3}

formed

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Solution

The correct option is C Reddish brown precipitate of $H g C O_{3} \cdot 3 H g O$ is formed
Option (C) is correct.
When $H g C l_{2}$ reacts with $C O_{3}^{2 -}$ anion, then reddish brown precipitate of $H g C O_{3} \cdot 3 H g O$ is formed.

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