Write the equations of chemical reactions. ZnS → SO2 → SO3 → H2SO4 S → H2S → SO2 → SO3 → H2SO4

Let’s carry out a chain of transformations of inorganic substances.

2ZnS + 3O2 = 2ZnO + 2SO2 (zinc sulfide roasting reaction)
2SO2 + O2 = 2SO3 (the reaction proceeds in the presence of a catalyst)
SO3 + H2O = H2SO4
S + H2 = H2S
2H2S + 3O2 = 2SO2 + 2H20
2SO2 + O2 = 2SO3
SO3 + H2O = H2SO4 (industrial method for producing sulfuric acid)

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