The Student Room Group

Constructing redox equations from oxidation states

So I started with the following unbalanced equation: HBr+H2SO4Br2+SO2HBr+H_2SO_4 \rightarrow Br_2+SO_2. I balanced it to form the redox equation: 2HBr+H2SO4Br2+SO2+2H2O2HBr+H_2SO_4 \rightarrow Br_2+SO_2+2H_2O, but the answer in the back of the book says 4H2O4H_2O instead of 2H2O2H_2O. Is this just a misprint because it doesn't seem to balance?
Original post by Malgorithm
So I started with the following unbalanced equation: HBr+H2SO4Br2+SO2HBr+H_2SO_4 \rightarrow Br_2+SO_2. I balanced it to form the redox equation: 2HBr+H2SO4Br2+SO2+2H2O2HBr+H_2SO_4 \rightarrow Br_2+SO_2+2H_2O, but the answer in the back of the book says 4H2O4H_2O instead of 2H2O2H_2O. Is this just a misprint because it doesn't seem to balance?


typo
Reply 2
Original post by charco
typo

Thanks, was just making sure

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