Відповідь:
1.S+H2-->H2S
2.H2S+2NaOH-->Na2S+2H2O
3.2Na2S+3O2-->2SO2+2Na2O
4.SO2+2H2S-->3S+2H2O
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Відповідь:
1.S+H2-->H2S
2.H2S+2NaOH-->Na2S+2H2O
3.2Na2S+3O2-->2SO2+2Na2O
4.SO2+2H2S-->3S+2H2O