Calculate the rate constant of first order reaction A B having rate 5.4 10^ -6 mol dm^ -3 s^ -1 and [A] = 0.3 M

MHT CET 2026 Chemistry question

Calculate the rate constant of first order reaction having rate and M

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

For a first order reaction, rate . So k = \dfrac{rate}{[A]} = \dfrac{5.4 \times 10^{-6}\ mol\ dm^{-3}s^{-1}}{0.3\ mol\ dm^{-3}} = 1.8 \times 10^{-5}\ s^{-1}. Hence

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Question ID VK-101481