Q6 Winter 2014 Final Exam

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Q6 Winter 2014 Final Exam

Postby Joslyn_Santana_2B » Tue Mar 14, 2017 10:30 am

1.) When a TA went over this at the review session, they said this question has SN1 and SN2 reactions throughout the steps. Is a question like this one possible to appear on the Final? The whole reaction has 4 steps, which confuses me since we have only covered SN2 and Electrophilic Addition Reactions.

2.) Why is the Rate law given? How are we supposed to use it, if we use it at all?
Thank you in advance.
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Re: Q6 Winter 2014 Final Exam

Postby Chem_Mod » Wed Mar 15, 2017 9:46 pm

1) While we did only go over Sn2 and electrophilic addition reactions, you could maybe see a question like this one if you were given the steps and asked to simply draw in the curved arrows. Using the given steps you can work out where the electrons are moving and thus where the curved arrows should go. Just remember that arrows go from an electron source to the electron recipient (ie from a nucleophile to an electrophile). You would not be expected to come up with the steps to something like this on your own.

2) I believe the rate law is to help you determine what step is the slowest step (step 2), which would tell you which step has the largest number of curved arrows because it would have the most going on it would be slower.

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