Chemistry - Chemical Kinetics Question with Solution | TestHub

The given chemical reaction is

$5{\mathrm{Br}}^{-}\left(\mathrm{aq}\right)+{\mathrm{BrO}}_3^{-}\left(\mathrm{aq}\right)+6{\mathrm{H}}^{+}\left(\mathrm{aq}\right)⟶3{\mathrm{Br}}_2\left(\mathrm{aq}\right)+3{\mathrm{H}}_2\mathrm{O}\left(l\right)$

Rate law expression for the given reaction can be written as

$-\frac{1}{5}\frac{\mathrm{\Delta }\left[{\mathrm{Br}}^{-}\right]}{\mathrm{\Delta t}}=-\frac{\mathrm{\Delta }\left[{\mathrm{BrO}}_3^{-}\right]}{\mathrm{\Delta t}}$

$-\frac{1}{6}\frac{\mathrm{\Delta }\left[{\mathrm{H}}^{+}\right]}{\mathrm{\Delta t}}=+\frac{1}{3}\frac{\mathrm{\Delta }\left[{\mathrm{Br}}_2\right]}{\mathrm{\Delta t}}$

$\Rightarrow -\frac{\mathrm{\Delta }\left[{\mathrm{Br}}^{-}\right]}{\mathrm{\Delta t}}=-\frac{5\mathrm{\Delta }\left[{\mathrm{BrO}}_3^{-}\right]}{\mathrm{\Delta t}}=-\frac{5}{6}\frac{\mathrm{\Delta }\left[{\mathrm{H}}^{+}\right]}{\mathrm{\Delta t}}$

$\frac{\mathrm{\Delta }\left[{\mathrm{Br}}^{-}\right]}{\mathrm{\Delta t}}=\frac{5}{6}\frac{\mathrm{\Delta }\left[{\mathrm{H}}^{+}\right]}{\mathrm{\Delta t}}$