In addition to mass balance, oiodation-reduction reactions must be balanced such

Question

In addition to mass balance, oiodation-reduction reactions must be balanced such that the number of electrons lost in tie oxidation equals the number d electrons gained in the reduction This balancing can be done by two methods The oxidation number method balances the net increase in oxidation of the substance oxidized with the net decrease n the oxidation number of the subat*ico reduced The hat-reaction method balances the electrons test in the oxdaton half-reaction vwdi the electrons gained in the reduction half-reaction In both methods H_2O(1). OH^- (aq).and H^+ (aq) may be added to complete the mass balance Which substances are used depends on the reaction conditions. In acidic solution, bromate ion can be used to react with a number of metal ions One such reaction is

Explanation / Answer

Part A : answer : 1,3,6,1,3,3

explanation :

BrO3- + 6H+ + 6e- -----------------> Br- + 3 H2O

Sn2+ ---------------> Sn4+ + 2e-

the balanced equation is

BrO3- + 3 Sn2+ + 6 H+ ---------------.> Br- + 3 Sn4+ + 3 H2O

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