Salt ( X ) when treated with dil H 2 SO 4 then colouress gas(Y) with rotten egg odour is evolved. When filter paper dipped in reagent ( Z ) and brought at the mouth of the the test tube then ( Y )

Question

Salt ( X ) when treated with dil H 2 ​ SO 4 ​ then colouress gas(Y) with rotten egg odour is evolved. When filter paper dipped in reagent ( Z ) and brought at the mouth of the the test tube then ( Y ) turns filter paper yellow. Identify the reagent Z

TestHub · Accepted Answer

The gas (Y) with a rotten egg odor is hydrogen sulfide (H₂S). H₂S reacts with cadmium acetate, Cd(CH₃COO)₂, to form yellow cadmium sulfide (CdS), which turns the filter paper yellow.

Reaction:

$H_{2} S (g) + Cd (CH_{3} COO)_{2} (a q) \to CdS (s) + 2 CH_{3} COOH (a q)$

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