Chemistry

Problem

Consider the following two balanced half-reactions occurring in acidic solution. Reduction:

\text{IO}_3^- + 6\,\text{H}^+ + 6\,e^- \rightarrow \text{I}^- + 3\,\text{H}_2\text{O}

Oxidation:

\text{H}_2\text{O}_2 \rightarrow \text{O}_2 + 2\,\text{H}^+ + 2\,e^-

When these half-reactions are combined to obtain the overall net ionic equation, what is the coefficient of

\text{O}_2

in the balanced equation? a) 6 b) 3 c) 2 d) 1