A-LevelChemistryElectrochemistry9701/12 · May/June 2015 · Q191 Mark
Chlorate(V) ions, ClO₃⁻, are produced in the redox reaction between chlorine and hot aqueous sodium hydroxide. Oxidation numbers can be used to help balance the equation for this reaction. What will be the values of coefficients v, x and y in the balanced equation? vCl₂(g) + wOH⁻(aq) → xCl⁻(aq) + yClO₃⁻(aq) + zH₂O(l) v x y
A2, 3, 1
B3, 4, 2
C3, 5, 1
D7, 12, 2
✓ Correct answer
C: 3, 5, 1
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