error on Kaplan 08-09 edition (ochem section)

[HoangDDS]

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This is from Kaplan blue/purple book 2008-2009 edition, full length test, orgo section.

#92 on page 670 (sorry @ library, no scanner or camera to upload structure / choices)

#92. "Which of the following is an appropriate resonance form of the conjugate base of p-aminobenzoic acid?"

The answer should be C, not E as stated in the answer key. Since it was asking for the conjugate base, the answer should have the correct resonance with an overall charge of -1. C is the only correct resonance structure. E (kaplan's answer) has the carbonyl carbon with 5 bonds and an overall formal charge of -2 .

Good luck everyone!

 

[Kkae]

Gee, ur abs. right

 

[Orgodox]

Yes also the next question has a mistake too on the same page back to back. I am not sure if they fixed it yet but I assume not since they didnt fix 92

In 93 in the 2007-2008 blue book page 680 choice C which they say is the answer has a carbon with 5 bonds

http://forums.studentdoctor.net/showthread.php?t=504694

and while your at it http://forums.studentdoctor.net/showthread.php?t=536746