Q: Balance the following equation by ion-electron method AsO3 3- + I2 + H2O gives AsO4 3- + H+ + I-1.

Balance the following equation by ion-electron method AsO3 3- + I2 + H2O gives AsO4 3- + H+ + I-1.

Flexi Says: In general, the half-reactions are first balanced by atoms separately. Electrons are included in the half-reactions. These are then balanced so that the number of electrons lost is equal to the number of electrons gained. Finally, the two half-reactions are added back together. The example is the oxidation of Fe2+ ions to Fe3+ ions by dichromate (Cr2O72−) in acidic solution. The dichromate ions are reduced to Cr3+ ions.