Chemistry - Chemical Kinetics Question with Solution | TestHub

${\text{2NH}}_3\left(\text{g}\right)\to {\text{N}}_2\left(\text{g}\right)+{\text{3H}}_2\left(\text{g}\right)$

Rate = k[NH₃]^o= k = 2.5 × 10^–4M s^–1.

$\frac{1}{2}\frac{-\text{d}}{\text{dt}}\left[{\text{NH}}_3\right]=\frac{1}{1}\left\{\frac{\text{d}}{\text{dt}}\left[{\text{N}}_{\text{2}}\right]\right\}=\frac{1}{3}\left\{\frac{\text{d}}{\text{dt}}\left[{\text{H}}_{\text{2}}\right]\right\}$

$\frac{d}{dt}\left[{\text{N}}_2\right]=\frac{2·5\times 10^{-4}}{2}=1·25\times 10^{-4}{\text{M s}}^{-1}$

$\frac{d}{dt}\left[H_2\right]=\frac{3}{2}\times 2·5\times 10^{-4}=3·75\times 10^{-4}{\text{M s}}^{-1}$