Write the reaction equation: S- Na2SO3- S- Na2S- H2S- SO2

1) S + 2Na2O2 = Na2SO3 + Na2O (when sulfur reacts with sodium peroxide, sodium sulfite and sodium oxide are formed);

2) Na2SO3 + 2H2S = 3S + 3H2O + 2Na (when sodium sulfite interacts with hydrogen sulfide, sulfur, water and sodium are formed);

3) S + 2Na = Na2S (when sulfur reacts with sodium, sodium sulfide is formed);

4) Na2S + 2HCl = 2NaCl + H2S (when sodium sulfide interacts with hydrochloric acid, sodium chloride and hydrogen sulfide are formed);

5) H2S + O3 = SO2 + H2O (when hydrogen sulfide interacts with ozone, sulfur (IV) oxide and water are formed).