Difficult
For a reaction scheme $A$ $\xrightarrow{k_1} B$ $\xrightarrow{k_2} C$,if the rate of formation of $B$ is set to be zero,then the concentration of $B$ is given by:
- A$\left( \frac{k_1}{k_2} \right) [A]$
- B$\left( k_1 - k_2 \right) [A]$
- C$k_1 k_2 [A]$
- D$\left( k_1 + k_2 \right) [A]$
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