Sulfur Trioxide

3 S(s) + 2 NaNO₃(s) = Na₂S(s) + 2 SO₂(g) + 2 NO(g)

2 NO(g) + O₂(g) = 2 NO₂(g)

2 SO₂(g) + 2 NO₂(g) = 2 SO₃(g) + 2 NO(g)

3 S(s) + 2 NaNO₃(s) = Na₂S(s) + 2 SO₃(g) + 2 NO(g)

Sulfur and Saltpeter: Where do they come from?

Pyrites, galena, sulfur

Saltpeter: KNO₃

“Chile” Saltpeter: NaNO₃