For the reaction A+B----->C+D, doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling the initial concentration of only B simply doubles the reaction rate. The rate law for the reaction is:
Correct answer: D. Rate = k[A]2[B]
- A. Rate = k[A][B]2
- B. Rate = k[A][B]
- C. R = k[A]1/2 [B]2
- D. Rate = k[A]2[B]
Explanation
It is overall 3rd order reaction. With respect to A, it is 2nd order reaction with respect to B is 1st order
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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