For a reaction \(\mathrm{A} \xrightarrow{\mathrm{K}_1} \mathrm{~B} \xrightarrow{\mathrm{K}_2} \mathrm{C}\)…
For a reaction \(\mathrm{A} \xrightarrow{\mathrm{K}_1} \mathrm{~B} \xrightarrow{\mathrm{K}_2} \mathrm{C}\)
If the rate of formation of \(B\) is set to be zero then the concentration of \(B\) is given by :
Rate of formation of $B$ is
$\begin{aligned} & \frac{\mathrm{d}[\mathrm{B}]}{\mathrm{dt}}=\mathrm{k}_1[\mathrm{~A}]-\mathrm{k}_2[\mathrm{~B}] \\ & 0=\mathrm{k}_1[\mathrm{~A}]-\mathrm{k}_2[\mathrm{~B}] \\ & \left(\frac{\mathrm{k}_1}{\mathrm{k}_2}\right)[\mathrm{A}]=[\mathrm{B}]\end{aligned}$