The rate of reaction in terms of the \"rate law expression\" includes the rate c

Question

The rate of reaction in terms of the "rate law expression" includes the rate constant (k), the concentration of the reactants, and the orders of the reaction with respect to the different reactants. Consider the following reaction: A+BC+D The initial concentrations of the reactants A and B are 0.240 M and 0.400 M, respectively. The rate of reaction is 0.060 Ms1, and the orders of the reaction, with respect to reactants A and B, are 1 and 2, respectively. Determine the rate constant (k) for the reaction using the rate law. Express your answer in M2s1 to three significant figures.

Explanation / Answer

Solution :-

Reaction is first order with A and second order with B

Therefore the Rate law equation for the reaction is as follows

Rate = K [A][B]^2

0.060 M.s-1 = K [0.240][0.400]^2

0.060 M.s-1 / [0.240][0.400]^2 = K

1.56 M-2 .s-1 = K

Therefore the rate constant of the reaction is 1.56 M-2 . s-1

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