Make up the reaction equations for the following transformations: Zn → ZnS → H2S → SO2 → SO3.

Zn → ZnS → H2S → SO2 → SO3.
1. Zn + S → ZnS. (Compound reaction)
2. ZnS + 2HCl → ZnCl2 + H2S ↑. (Exchange reaction with the formation of a volatile compound)
3.2H2S + 3O2 → 2H2O + 2SO2 ↑. (Exchange reaction with the formation of a volatile compound)
4.2SO2 + O2 → 2SO3. (Compound reaction)



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