Black sulphides are formed by :

C u^{2 +}

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S b^{3 +}

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P b^{2 +}

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A g^{+}

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Solution

The correct options are
B $P b^{2 +}$
C $C u^{2 +}$
D $A g^{+}$
When the aqueous solution of these salt is reacted with $H_{2} S$ gas, then these give black sulphides.
$A : C u^{2 +} + H_{2} S \to C u S$ ( black ) $+ 2 H^{+}$
$C : P b^{2 +} + H_{2} S \to P b S$ (black) $+ 2 H^{+}$
$D : A g^{+} + H_{2} S \to A g_{2} S$ (black) $+ 2 H^{+}$

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Similar questions

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and

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Q. A black sulphide is formed by the action of

H_{2} S

on :

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Black sulphides are formed by :

The correct options are B Pb2+ C Cu2+ D Ag+When the aqueous solution of these salt is reacted with H2S gas, then these give black sulphides.A:Cu2++H2S→CuS ( black ) +2H+C:Pb2++H2S→PbS (black) +2H+D:Ag++H2S→Ag2S (black) +2H+