During the redox reaction of chlorine with hot aqueous sodium hydroxide, chlorate(V) ions, $\text{ClO}_3^-$, are formed. Oxidation numbers may be used to help in balancing the equation for this reaction. $v\text{Cl}_2(g) + w\text{OH}^-(aq) \rightarrow x\text{Cl}^-(aq) + y\text{ClO}_3^-(aq) + z\text{H}_2\text{O}(l)$ State the values of v, x and y in the balanced equation.
- Av = 2, x = 3, y = 1
- Bv = 3, x = 4, y = 2
- Cv = 3, x = 5, y = 1
- Dv = 7, x = 12, y = 2