Please explain step by step. Not getting this question at all. Thanks Two reacti

Question

Please explain step by step. Not getting this question at all. Thanks

Two reactions both have the overall equation A + B rightarrow products. Reaction 1 has a rate constant k_1 = 25.6 mol L^-1 s^-1, while Reaction 2 has a rate constant k_2 = 65.2 mol L^-1 s^-1. If the [A]_0 and [B]_0 are the same for both reactions, which one will have the fastest rate of disappearance of A? a. Reaction 1 will have the fastest rate b. Reaction 2 will have the fastest rate c. Both reactions will have the same rate d. Not enough information is given to determine the rate

Explanation / Answer

Rate of reaction depends on concentration of reactions

But ..Higher the rate constant impliest lower the Activation enrgy and faster the reaction rate

k = A*e^-Ea / RT

So the rate constant for which is higher the reaction will be rapid

In the given question ;

Reaction 2 has higher rate constant ;

Therefore b is the answer

Reaction 2 will have the fastest rate .

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