2H2S+3O2=2H2O+2SO2стрелка вверх
2H2S+SO2=3S+2H2O
H2S+Na(OH)2=NaS+2H2O
H2S+BaO=BaS+H2O
H2S+CuCl2=CUS+H2O
H2S+2Na=2HNa+S