Why hydrogen sulfide turns lead acetate paper silvery black?
Hydrogen sulfide turns lead acetate paper silvery black due to the formation of lead sulfide.
CH3COO2Pb+H2S→2CH3COOH+PbS
Identify the gas from the following observations:
A colourless gas having a rotten eggs like smell. It turns limewater milky and moist lead acetate paper silvery black.