1) FeS2 -> SO2 -> SO3 -> H2SO4 2) S -> HgS -> SO2 -> Na2SO3 -> SO2 -> SO3 -> H2SO4

Question

1) FeS2 -> SO2 -> SO3 -> H2SO4

2) S -> HgS -> SO2 -> Na2SO3 -> SO2 -> SO3 -> H2SO4

Answer 1

FeS2+CaO->Ca3Fe2+so2
so2+so->So3
So3+H2o->H2So4

Answer 2

FeS2 -> SO2 -> SO3 -> H2SO4

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