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Consider a reaction that occurs by the following mechanism: A+BC?AC+B AC+D?A+CD

ID: 789107 • Letter: C

Question

Consider a reaction that occurs by the following mechanism:

A+BC?AC+B

AC+D?A+CD

?The potential energy profile for this reaction is as follows:

Part A

What is the equation for the overall reaction?

Part B

Which of the two steps in the mechanism is the rate-determining step?

a. AC+D?A+CD

b. A+BC?AC+B

Part C

What is the rate law for the overall reaction?

Rate = k[A]

Rate = k[B]

Rate = k[BC]

Rate = k[A][BC]

Rate = k[AC][B]

Rate = k[AC]

Part D

Is the reaction endothermic or exothermic?

Rate = k[A]

Rate = k[B]

Rate = k[BC]

Rate = k[A][BC]

Rate = k[AC][B]

Rate = k[AC]

Consider a reaction that occurs by the following mechanism: A+BC?AC+B AC+D?A+CD ? The potential energy profile for this reaction is as follows: What is the equation for the overall reaction? Which of the two steps in the mechanism is the rate-determining step? AC+D?A+CD A+BC?AC+B What is the rate law for the overall reaction? Is the reaction endothermic or exothermic?

Explanation / Answer

Part A:

BC+D-> B+CD

*The AC's cancel each other out and so do the A's on each side of the equation