Question

Appart from H2S which other gas turn lead acetate black

Answer 1

Explanation:

Lead acetate on coming in contact with H2s gas forms lead sulfide which is black in color.

Answer 2

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Apart from H2S gas leads sulfide which can also turn into lead acetate black. It's an inorganic anion of sulfur with the chemical formulas $\ frac{S}{^2-$