Chemical Kinetics And Nuclear Chemistry

Consider the following single step reaction in gas phase at constant temperature.

\(2 \mathrm{~A}_{(\mathrm{g})}+\mathrm{B}_{(\mathrm{g})} \rightarrow \mathrm{C}_{(\mathrm{g})}\)

The initial rate of the reaction is recorded as \(\mathrm{r}_1\) when the reaction starts with \(1.5 \mathrm{~atm}\) pressure of \(\mathrm{A}\) and \(0.7 \mathrm{~atm}\) pressure of B. After some time, the rate \(r_2\) is recorded when the pressure of C becomes \(0.5 \mathrm{~atm}\). The ratio \(\mathrm{r}_1: \mathrm{r}_2\) is _________ \(\times 10^{-1}\). (Nearest integer)