Radical Halogenation of Alkanes

[tncekm]

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Okay, so after doing a TPR practice exam, it seems that I may need to know that the ratio of primary:secondary:tertiary alkly halogenation is 1:4:5 and that I need to multiply that probability by the number of available primary, secondary, and tertiary hydrogens available for substitution to find the "real" major product.

Does this seems like MCAT material, or was this just an example of TPR being beyond the scope of the MCAT?

Thx

 

[Rofeh20]

Um, NO! 😀

 

[tncekm]

Thanks 😀 When I got that answer wrong, I was like: WTF? Because I Just figured it was a problem regarding reactivity of alkyl radicals. Then when I read over the explanation, I understood it, but it seemed soooooo unreasonable in difficulty.

 

[unsung]

Which TPR exam was it? I'm taking TPR right now, guess I haven't taken that one yet. But yeah, TPR Qs are a bit "off" like that, sometimes. Probably nothing to worry about.

 

[tncekm]

#3 - it was definitely a little rougher than my experience with AAMC 3 CBT 😀