Chemical KineticsmediumMCQ SINGLE⭐ Must-Do

In a consecutive sequential reaction mechanism modeled as , what is the specific timestamp at which Chemical Kinetics Chemistry Question

Question

In a consecutive sequential reaction mechanism modeled as $A \xrightarrow{k_1} B \xrightarrow{k_2} C$, what is the specific timestamp $t_{max}$ at which the intermediate species B reaches its maximum concentration?

Answer: A

💡 Solution & Explanation

The concentration of intermediate B is maximized precisely when its rate of formation equals its rate of consumption ($\frac{d[B]}{dt} = 0$). Solving the calculus equations for this boundary yields the universal formula $t_{max} = \frac{\ln(k_1/k_2)}{k_1 - k_2}$.

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