Question

1. Identify the oxidizing and reducing agent.
As)3^-3 + IO^-3 --> AsO4^-3 + I^-1

I'm not sure if I did it correct, but the only element that seems to have experienced a change in oxidation number is As.

2. Balance the following equations using the oxidation number method.

a) Sb2S3 + NO3^-1 --> NO2 + SO4^-2 + Sb2O5
b) Hg4Fe(CN)6 + ClO3^-1 --> Cl^-1 + NO + CO2 + Fe^+3 + Hg^+2