Research in your lab is focusing on the reaction 2A + 2B C + D After performing

Question

Research in your lab is focusing on the reaction 2A + 2B C + D After performing many different experiments, you have determined that the rate law for this experiment is: rate=k[B]. You and your graduate student have come up with six possible mechanisms for the reaction. How many of the following mechanisms are plausible mechanisms based on the rate law information you have? Mechanism 1 Mechanism 2 slow fast slow fast fast E+BF F+BC+D Mechanism 3 Mechanism 4 fast fast slow fast A+ B E F B C + D fast Mechanism 5 A A B E fast EBD slow Mechanism 6 Submit AnswerTries 0/2

Explanation / Answer

The experimentally determined rate law is r = k[B] that means it is first order with respect to B and rate of reaction depends on concentration of B only. Thus B is involved only in a slow step alone or with an intermediate

Hence, mechanisms 3 and 5 are plausible

Answer is 2

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