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Preparations and Uses of Caustic Soda

When a neutra...

Question

When a neutral or slightly alkaline solution of thiosulphate is treated with the $[N i ({e n}_{3})] {({N O}_{3})}_{2}$ complex, then?

A

Green precipitate is obtained

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B

Brown precipitate is obtained

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C

Violet precipitate is obtained

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D

Yellow precipitate is obtained

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Solution

The correct option is A Green precipitate is obtained
$[N i (e n)_{3} (N O_{3})_{2} S_{2} O_{3}^{- 2} - --- \to [N i (e n)_{3}] S_{2} O_{3}$ .
Green precipitate is obtained .

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Preparations and Uses of Caustic Soda

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