For a chemical reaction, $A \rightarrow B$, it was found that concentration of $B$ is increased by $

Question

For a chemical reaction, $A ightarrow B$, it was found that concentration of $B$ is increased by $0.2 \mathrm{~mol} \mathrm{~L}^{-1}$ in 30 min . The average rate of the reaction is _______ $	imes 10^{-1} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~h}^{-1}$. (Nearest integer)\

Professor PC Thomas Classes · Answer

$(4):        A \longrightarrow B$\ $t=0 \quad a \quad 0$\ $t=30 \mathrm{~min}(a-x) \quad x=0.2 \mathrm{~mol} \mathrm{~L}^{-1}$ Average rate $=\frac{d[B]}{d t}=\frac{0.2 \mathrm{~mol} \mathrm{~L}^{-1}}{0.5 	ext { hour }}$ $$ \begin{aligned} & =0.4 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{hr}^{-1} \ & =4 	imes 10^{-1} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{hr}^{-1} \end{aligned} $$