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Org Chem 2A - Practice Q 1
RobertsA
#1 Posted : Tuesday, June 15, 2010 4:09:40 PM
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Minute 14:40ish

Why is the answer D) and not C)?

Even if there were to be a double halogenation of the product why would it be on one of the primary carbon types and not on the secondary?

Any idea?

Thanks!
matthewward
#2 Posted : Tuesday, June 15, 2010 9:11:55 PM
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I think you are right - it was meant to be answer choice C based on what she was talking about....halogenation is a tricky reaction (in reality) as multiple products are going to be favored. In reality, the secondary or even primary halogenated product might actually be favored, as you start to play a bit of an odds game (i.e., tertiary position may be thermodynamically favored, but if 9 primary positions exist elsewhere on the molecule, bromine may be more likely to take up one of those positions instead).

Again, when you are doing your studying, try not to get too caught up in all the specific details....learn the basics and do literally 1000's of practice problems....it's the only way to become strong on the MCAT!

Good luck!
Emily
#3 Posted : Wednesday, June 16, 2010 4:59:12 PM
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Where is the best place to find "1000's of practice problems"? There really aren't that many problems in the books we have.
thivisharajagopal
#4 Posted : Thursday, June 17, 2010 5:31:16 PM
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Hi Emily

You should've also got the 1001 questions in the examcrackers for each subject. These were separate books from the lessons.

Thivisha.R
Emily
#5 Posted : Sunday, June 20, 2010 8:56:54 PM
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Were we supposed to buy these separately from the course? I had the books already (or so I thought) and got the $125 book fee refunded and now I'm realizing that I need more practice problems!

Any advice would be great. Thanks! :)
sameersyed
#6 Posted : Wednesday, June 30, 2010 7:34:15 AM
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Hey Emily, the 1001 question books would have been included in the book package. I would say your best be would be to either buy the 1001 question books if you know where to get them, or contact prep101 and see if you can order them separately. Either way definitely get ahold of good set of practice questions soon.

Good luck!

Sameer
michaelforrester
#7 Posted : Wednesday, June 30, 2010 10:12:29 PM
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Hi Emily,

I would like to add to what was said already by Sameer.

The ExamKrackers books should be your first resource, as they will emphasize what you have been learning in your lessons (chapters are matched between Study Guides and Workbooks).

But (if you're a real keener!) if you're looking for more practice material, you can find lots more MCAT prep questions and books at (almost) any university bookstore. But caveat emptor: news through the grapevine is that the Barron's MCAT prep book is underwhelming...

Again, check out more ExamKrackers first!

Cheers,
-Mike

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