# Oxidizing properties of sulfuric acid: can it oxidize hydrochloric acid to chlorine?

Can $$\ce{H2SO4}$$ oxidize $$\ce{HCl}$$ to $$\ce{Cl2}$$? I know that $$\ce{KMnO4}$$ can do it, but my question is considering $$\ce{H2SO4}$$. In sulfuric acid, sulphur is in +6 oxidation state and in $$\ce{KMnO4}$$, manganese is in +7 oxidation state. But sulphur is more electronegative than manganese, so I guessed that, $$\ce{H2SO4}$$ should be equally good oxidizing agent as $$\ce{KMnO4}$$.

However, I got to know that $$\ce{KMnO4}$$ can oxidising $$\ce{HCl}$$ to $$\ce{Cl2}$$ but $$\ce{H2SO4}$$ can't. Why it is so? I would also like to know which one has more oxidizing power and why?

• Oxidation state and central atom electronegativity do not determine oxidation properties. May 12 at 9:35
• May 12 at 9:44