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22. Which compound is the strongest acid? (A) o (B) CI CH TOH OH CH, (C) (D) 28. At room temperature, the compound shown is a/n: (A) achiral molecule (B) chiral molecule (C) es compound (D) mese compound OH F OH Hot 29. What is the relationship between these HICHO CHO structures? (A) enantiomers (B) diastereomers (C) same compound (D) constitutional isomers w fuqisens 23. What is the configuration of OH the stereogenic carbon нс. OH atom(s) (stereocenter(s)) in this molecule? CH, H (A) R (B) S (C) (2R, 3R) (D) (25, 35) 24. What is the relationship between this pair of CH CH, structures? H-Br Br-H Br (A) enantiomers -H Br-H CHE CH, (B) diastereomers (C) same compounds (D) constitutional isomers 25. How many stereogenic CH carbon atoms (chiral centers) are present in this compound? 30. Consider the compound shown. This molecule he an chiral center and a/an alkene. но. CH o HBr (A)R;Z (B)R:E (C)S:2 (D)S; E 31. How many hydrogen atoms are axial in the lower energy conformation of trans-1,3- dimethylcyclohexane? (A) 2 (B) 3 (C) 4 (D) 5 (A)2 (B) (C) 4 (D) 5 26. What are the configurations of the two stereogenic carbon atoms in this molecule? (A) (3R, 6R) (B) (3R, 65) (C) (35,6R) (D) (35, 65) CIH 32. Which molecule is the best Sul substrate? (A) (B) нсн (C) (D) 27. Which compound will be expected to rotate a plane of polarized light? OH Br Hac HOC HEC CH сн. (2) (1) (3) (4) 33. Which factor does not influence the rate of a reaction? (A) carbocation stability (B) nucleophiles (C) solvent (D) steric effects (A) (1), (2), and (3) (0) (1), (3), and (4) (B) (1), (2), and (4) (D) (2), (3), and (4)