For a reaction scheme


For a reaction scheme $\mathrm{A} \stackrel{\mathrm{k}_{1}}{\longrightarrow} \mathrm{B} \stackrel{\mathrm{k}_{2}}{\longrightarrow} \mathrm{C}$, if

the rate of formation of B is set to be zero then the concentration of $B$ is given by :


  1. $\left(\frac{\mathrm{k}_{1}}{\mathrm{k}_{2}}\right)[\mathrm{A}]$

  2. $\left(\mathrm{k}_{1}+\mathrm{k}_{2}\right)[\mathrm{A}]$

  3. $\mathrm{k}_{1} \mathrm{k}_{2}[\mathrm{~A}]$

  4. $\left(\mathrm{k}_{1}-\mathrm{k}_{2}\right)[\mathrm{A}]$

Correct Option: 1


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