Tin (II) is oxidized to tin (IV) with hydrogen peroxide: Sn2+ (aq) + H2O2 (aq) -> H2O (l) + Sn 4+ (aq). Balance the equation in an acidic solution.
Sn2+ -----------> Sn4+ + 2e- oxidation
H2O2 + 2H+ + 2e- ---------> 2H2O reduction
adding both equation, gives
Sn2+ + H2O2 + 2H+ ------------> 2 H2O + Sn4+
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