Question

10) Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound is chiral. B) This compound is optically active. C) This compound has an enantiomer D) all of the above E) none of the above 11) Predict the specific rotation of the compound shown. CH нс A) It is impossible to predict; it must be determined experimentally. B) Because both asymmetric centers are R, the compound is dextrorotatory. C) Because both asymmetric centers are S, the compound is levorotatory. D) Zero; the compound is achiral. E) Because this compound represents a racemic mixture, the compound is dextrorotatory. 12) A mixture of equal amounts of two enantiomers A) is called a racemic mixture B) is optically inactive C) implies that the enantiomers are meso forms D) both A and B E) none of the above 13) If a mixture contains 75% of one compound and 25% of its enantiomer, what is the e.e, of the mixture? A) 100 B) 75 C) 50 D) 25 E) 3

Answer 1

10. (D) 11. (D) 12. (D) 13. (C)

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