The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be

Question

a. rate = k(A]2
b. rate = k(B]2
c. rate = k(A][B]
d. rate = k(A][B]2
e. none of the above represents the rate law for this elementary reaction.

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Answer 1

d. However, such three-body reactions are rare. They usually proceed in a number of steps that involve unstable intermediate species.