In a consecutive first order reaction \[ \mathrm{A} \stackrel{\mathrm{k}_{1}}{\longrightarrow} \...

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In a consecutive first order reaction
\[
\mathrm{A} \stackrel{\mathrm{k}_{1}}{\longrightarrow} \mathrm{B} \stackrel{\mathrm{k}_{2}}{\longrightarrow} \mathrm{C}
\]
species B have transient existence when
(a) \( \mathrm{k}_{1} \approx \mathrm{k}_{2} \)
(b) \( \mathrm{k}_{1} \gg \mathrm{k}_{2} \)
(c) \( \mathrm{k}_{1}=2 \mathrm{k}_{2} \)
(d) \( \mathrm{k}_{1}\mathrm{k}_{2} \)
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