Chemistry - Chemical Kinetics Question with Solution | TestHub

Total pressure at time $t=P_0-P+2P+P=P_t$ $\begin{array}{rl}& \Rightarrow P_t=P_0+2P\\ & P_t-P_0=2P\Rightarrow P=\frac{P_t-P_0}{2}\\ & k=\frac{2.303}{t}\log \left[\frac{P_0}{P_0-P}\right]\\ & =\frac{2.303}{t}\log \left[\frac{P_0}{P_0-\left(\frac{P_t-P_0}{2}\right)}\right]\\ & =\frac{2.303}{t}\log \left[\frac{2P_0}{2P_0-P_t+P_0}\right]=\frac{2.303}{t}\log \left[\frac{2P_0}{3P_0-P_t}\right]\end{array}$