29. Which of the following is TRUE of chirality? A. Compounds with chiral centers are always chiral. B. Compounds with no chiral centers are always achiral. C. Compounds with planes of symmetry are achiral. D. Choices B and C 30. If a substance has a specific rotation, it describes the substance as A. levorotatory B. dextrorotatory C. optically active D. choices A and C 31. A sample of the amino acid L-cystine has a specific rotation of -14°. Pure L- Cystine has a specific rotation of -70°. What % of each enantiomer is present in the sample? A. -14 and + 56 B. -20 and + 80 C. -60 and + 40 D. -80 and + 20 32. The molecule below can exist as Br OH A. one enantiomer B. two enantiomers C. two pairs of enantiomers D. one pair of enantiomers

29. Which of the following is TRUE of chirality? A. Compounds with chiral centers are always chiral. B. Compounds with no chiral centers are always achiral. C. Compounds with planes of symmetry are achiral. D. Choices B and C 30. If a substance has a specific rotation, it describes the substance as A. levorotatory B. dextrorotatory C. optically active D. choices A and C 31. A sample of the amino acid L-cystine has a specific rotation of -14°. Pure L- Cystine has a specific rotation of -70°. What % of each enantiomer is present in the sample? A. -14 and + 56 B. -20 and + 80 C. -60 and + 40 D. -80 and + 20 32. The molecule below can exist as Br OH A. one enantiomer B. two enantiomers C. two pairs of enantiomers D. one pair of enantiomers

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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