# Does hydrogen peroxide in basic medium only give oxygen gas on oxidation?

Does hydrogen peroxide on oxidation gives oxygen gas only in basic medium?

I thought that was true but I read about these reaction of $$\ce{H2O2}$$ in acidic medium: $$\ce{2MnO4- + 6H+ + 5H2O2 -> 2Mn^{+2} + 8H2O + 5O2}$$

$$\ce{K2Cr2O7 + 4H2SO4 + 3H2O2 -> K2SO4 + Cr2(SO4)3 + 7H2O + 3O2}$$

What is the possible explanation of both the title and the reactions?

• I don't get it, what would expect when H2O2 is oxidized? – Mithoron Oct 8 '18 at 16:32

In both reactions $$\ce{H2O2}$$ is oxidized by the more powerfull oxidizers permanganate ($$\ce{KMnO4-}$$) and dichromate ($$\ce{Cr2O7^2-}$$).
See this discussion: Half equations for $$\ce{H2O2}$$