Chemistry - Chemical Kinetics Question with Solution | TestHub

Consider the two different first order reactions given below $\mathrm{A}+\mathrm{B}\to \mathrm{C}$ (Reaction 1$)$ $P\to Q$ (Reaction 2) The ratio of the half life of Reaction 1 : Reaction 2 is $5:2$. If $t_1$ and $t_2$ represent the time taken to complete $2/3^{\text{rd }}$ and $45^{\text{th }}$ of Reaction 1 and Reaction 2, respectively, then the value of the ratio $t_1:t_2$ is ______ $\times 10^{-1}$ (nearest integer). [Given : ${\log }_{10}(3)=0.477$ and ${\log }_{10}(5)=0.699$]