Main Question or Discussion Point
Is it right to say sulfur dioxide is oxidized to sulfuric acid? SO2 is converted into H2SO4, hydrogen is added so it should be reduction rather than oxidation.
I meant previously it was SO2(no hydrogen atom) and then it became H2SO4 (two hydrogen atoms)so it should be reduction why it is written in my textbook that SO2 is oxidised when it get converted into H2SO4?I don't think I have ever heard about a method of producing sulfuric acid that uses hydrogen, can you elaborate?
So we should say sulfur is oxidized rather than SO2 is oxidized.Formal oxidation states for oxygen are always -2. Minus eight for oxygen, plus two for two hydrogens, leaves plus six for sulfur. Compare that to plus four for sulfur in sulfur dioxide, and the sulfur has been further oxidized.