Chlorination achiever

[discensdentibus]

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I just got done taking my last achiever test; I got some interesting results:

Bio/GC/OC/TS/PAT/RC/QR/AA
19/ 28/ 28/23 /21 /14 /21/22

Anyways, I have problems with the answer to this question. In chlorination, I could have sworn that it is not selective, and by the reactivity-selectivity principle, we would assume that a somewhat increased temperature decreases selectivity of chlorination. If it were bromination I would agree with this answer, but I am almost positive it should be all of the above. I know what the "most stable" product is, but that gets funky when you get into radicals. I appreciate all input/thoughts

 

[Member 139582]

I am not completely sure, but I feel as though even though chlorination is not as selective as bromination, that doesn't mean all the chlorinated products formed are in equal concentrations. I was thinking that since it had asked for the one in the most abundant concentration, it would be the radical that is most stable, as Im sure you know, the tertiary. So that is why the first answer is the most abundant, however, if it asked for which of these products is formed, without mentioning abundancies, then it would be all of the above. Would you agree with this?
That is just what I think, maybe other people can help clear this up.

 

[discensdentibus]

Yeah, my only reference to a text is an example with room temperature values for abundance for chlorination.
5.0>3.8>1.0
tert>sec>primary radical formation rates

When taking into account hydrogen abundance:
1x5.0 ; 2x 3.8 ; 9x 1.0 ---> 5.0 ; 7.6 ; 9.o

This leads to an expected 1>2>3 for formation. The text does mention that expected and experimental do vary, though.

I wish I could summon Dr. Romano/Chad

 

[emminent]

Wow those are pretty good scores; what you been studying with?

 

[discensdentibus]

Destroyer, Chad's, old chem notes. The first two achiever tests were a different story; they held my chems to high teens/low 20. I tutor orgo also, and that helps a ton.

 

[emminent]

Any tips on QR? I've been slacking on that lately only did one test so far and kinda nervous...

 

[discensdentibus]

I guess tip No. 1 is don't slack on what you don't know. I got a 19 on qvault bio and noticed a pattern of questions I was missing. I decided to pull out the good ol' campbell bio and make some notes. Next qvault I got a 27. There have been times where I get something wrong on a test, and it causes me to really focus on learning a topic's entirety. If you only studied clips of a movie that are important versus watching the entire movie, you are obviously going to have a better general understanding of things if you are exposed to the whole thing first, and then, go watch some clips and you understand how it fits into the big picture. Its hard to watch a bunch of out of order clips and piece them together into your head (think memento).

If you have math destroyer do those. See how long it takes you to finish a test. I did every test, and I noted the time it took to complete them; however, I only started playing beat the clock for tests 5-10ish. Go over problems you notice you are consistently getting wrong or are solving way too slowly; you have to be critical of yourself. Depending on how you learn, you may need to devote some time over a couple days to gain confidence in solving those types of problems.