Chlorine Dioxide Reacts in Basic Water to Form Chlorite and Chlorate

question 60

Multiple Choice

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2ClO₂(aq) + 2OH^-(aq) $\rarr$ ClO₂^-(aq) + ClO₃^-(aq) + H₂O(l)
A kinetic study of this reaction under a certain set of conditions yielded the data below. $\begin{array}{|l|c|c|c|}\hline \operatorname{Exp} & {\left[\mathrm{ClO}_{2}\right](\mathrm{M}) } & {\left[\mathrm{OH}^{-}\right](\mathrm{M}) } & -\Delta\left[\mathrm{ClO}_{2}\right] / \Delta \mathrm{t}(\mathrm{M} / \mathrm{s}) \\\hline 1 & 0.0500 & 0.100 & 5.75 \times 10^{-2} \\\hline 2 & 0.100 & 0.100 & 2.30 \times 10^{-1} \\\hline 3 & 0.100 & 0.0500 & 1.15 \times 10^{-1} \\\hline\end{array}$ Which one of the following is the rate law for this reaction

• A) rate = k[ClO₂][OH^-]
• B) rate = k[ClO₂]²[OH^-]
• C) rate = k[ClO₂][OH^-]²
• D) rate = k[ClO₂]²[OH^-]²
• E) rate = k[ClO₂]⁴[OH^-]

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