Chemical KineticshardMCQ SINGLE

In the reaction , if the initial rate of disappearance of at is , what will be the value of the rateChemical Kinetics Chemistry Question

Question

In the reaction $A + 2B \rightarrow 6C + 2D$, if the initial rate of disappearance of $A$ at $t=0$ is $2.6 \times 10^{-2} \text{ M s}^{-1}$, what will be the value of the rate of disappearance of $B$ in $\text{M s}^{-1}$?

Answer: A

💡 Solution & Explanation

Rate $= -\frac{d[A]}{dt} = -\frac{1}{2}\frac{d[B]}{dt}$. Therefore, $-\frac{d[B]}{dt} = 2 \times \left(-\frac{d[A]}{dt}\right) = 2 \times 2.6 \times 10^{-2} = 5.2 \times 10^{-2} \text{ M s}^{-1}$.

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