Answer:
H₂S
Step-by-step explanation:
Hydrosulfuric acid also known as sulfane or popular known as hydrogen sulphide is a hydride of sulphur which is a colourless gas but has smell of rotten egg. It is a poisonous gas and has similar chemical structure like water.
Hydrogen sulphide can be produced by reducing aluminium sulphide with water.
6 H2O + Al2S3 → 3 H2S + 2 Al(OH)
Or can be produced by This gas is also produced by heating sulfur with solid organic compounds and by reducing sulfurated organic compounds with hydrogen.