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Zinc Ion

When H2S ga...

Question

When $H_{2} S$ gas is passed in a metal sulphate solution in presence of $N H_{4} O H$ , a white precipitate is produced. The metal is/are not identified as :

A

Z n

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B

F e

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C

P b

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D

H g

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Solution

The correct options are
B $F e$
C $P b$
D $H g$
When $H_{2} S$ gas is passed in a zinc sulphate $Z n S O_{4}$ solution in presence of $N H_{4} O H$ , a white precipitate of $Z n S$ is produced.
$Z n S O_{4} + H_{2} S \to Z n S + H_{2} S O_{4}$
The other metal sulfides formed in the reaction are not white in colour.
$F e S$ and $P b S$ form black precipitate while $H g S$ forms red.

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If true enter 1, else enter 0.

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