Make up the reaction equation: Sulfur – Hydrogen sulfide – Sulfur – Copper (II) sulfide – Sulfur dioxide;

Let’s write down the chain of transformations: S – H2S – S – CuS – SO2.
S + H2 = H2S – compound reaction;
H2S + H2SO4 (conc.) = S + SO2 + 2H2O – redox reaction;
Cu + S = CuS – compound reaction:
2CuS + 3O2 = 2CuO + 2SO2 – redox reaction.
Sulfur compounds are toxic. Hydrogen sulfide causes disturbances in the human respiration process. Sulfur oxide contributes to the formation of acid rain, which causes air and soil pollution.