Page 11 - FPGEE Medicinal and Organic Chemistry Q&A Book

Krisman

21. Which two fischer formulas represent a 23. Which of the following compounds
pair of enantiomers? represents a pair of enantiomers?

a. X and Y
b. X and Q
c. Z and Y
d. Z and R

24. Pure (R)-2-pentanol has a specific rota-
tion of -10.50 degrees. You have purified a
sample that has a calculated specific rotation of
a. I and IV -2.625 degrees. What can you conclude about
b. II and III this sample?
c. III and I
d. II and IV a. The sample has completely racemized
b. 75% of the sample has rearranged into
22. Which of the following compounds is a meso-isomer
(S)-4-bromo-1-methylcyclohexene? c. 50% of the sample has racemized
d. 75% of the sample has racemized

25. Which of the following is classified as
a meso- compound?

a. I
b. II
c. III
d. IV

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