2H2S + O2 = 2S + 2H2O
S + O2 = SO2
SO2 + Na2O = Na2SO3
Na2SO3 + 2HCl = 2NaCl + SO2 + H2O
2SO2 + O2 = 2SO3
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Verified answer
2H2S + O2 = 2S + 2H2O
S + O2 = SO2
SO2 + Na2O = Na2SO3
Na2SO3 + 2HCl = 2NaCl + SO2 + H2O
2SO2 + O2 = 2SO3