Solution
= Solution
$$
\boxed{[k]=\mathrm{dm^3\,mol^{-1}\,s^{-1}}}
$$
because a second-order <concentration> product must give a rate in $\mathrm{mol\,dm^{-3}s^{-1}}$.
= Solution
$$
\boxed{[k]=\mathrm{dm^3\,mol^{-1}\,s^{-1}}}
$$
because a second-order <concentration> product must give a rate in $\mathrm{mol\,dm^{-3}s^{-1}}$.