MHT CET 2023 Chemistry question

What is the value of rate constant for first order reaction if slope for the graph of rate versus concentration is 2.5 x

(A)2.5 x Correct
(B)5.0 x
(C)7.5 x
(D)1.25 x

Answer: (A)

Solution

For a first order reaction the rate law is . A plot of rate (y-axis) against concentration (x-axis) is therefore a straight line through the origin whose slope equals the rate constant . Slope , so $k =

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Question ID VK-098170