未分類

19. Which one of the following molecules has a non-zero dipole moment?(A)BeCl2 (B)Br2 (C)BF3 (D)IBr

20. Which one of the following molecules is polar?(A)PBr5 (B)CCl4 (C)BrF5 (D)XeF2

21. What is the strongest type of intermolecular force present in NH2CH3?(A)dispersion (B)dipole-dip

22. Identify the compound that does not have hydrogen bonding.(A)(CH3)3N (B)H2O (C)CH3OH (D)HF

23. What is the type of intermolecular force for dissolving NaCl in H2O?(A)dispersion (B)dipole-dipo

24. What is the type of intermolecular force for dissolving Br2 in H2O?(A)dispersion (B)dipole-dipol

25. Which of the following acids will have the strongest conjugate base?(A)HCl (B)HClO4 (C)HNO3 (D)H

26. Which one of the following salts, when dissolved in water, produces the solutionwith the lowest

27. Which of the following is a Lewis acid?(A)BBr3 (B)CCl4 (C)NH3 (D)CHBr3

28. Which of the following is a Lewis base?(A)AlF3 (B)H2O (C)SiF4 (D)

29. Which are acid-base reactions according to Lewis theory but not according to the Brønsted-Lowry

30. Which acid is the most acidic?   (A)I (B)II (C)III (D)IV

31. Which is the IUPAC name for the following cycloalkane? (A)2,4-dimethyl-1-ethylcyclopentane (B)1,

32. Which conformation of pentane is most stable?(A)I (B)II (C)III (D)IV

33. Which of these diaxial conformations has the highest energy? (A)I (B)II (C)III (D)IV

34. Which structure is Z-2-bromo-3-methyl-2-pentene?(A)I (B)II (C)III (D)IV

35. Arrange these carbocations in order of increasing stability (least to most).(A)I, II, III (B)I,

36. Which of the following alkenes is the major product when2-bromo-2-methylpentane is treated with

37. Which of the following alkenes is the major product when2-bromo-2-methylpentane is treated with

38. Which of the following statements applies to the E2 mechanism?(A)It occurs with inversion of ste

39. What is the major product of the following reaction? (A) (B) (C) (D)

40. Provide the reagents necessary to complete the following transformation.(A)1. BH3∙THF 2. H2O2, H

41. Which of the following reagents will convert 1 mole of 3-methylpent-1-yne into3-methylpentane?(A

42. Which of the following reagents should be used to convert to(A)H2, Pt (B)Na, NH3 (C)H2, Lindlar&

43. Which of the following statements correctly pertains to a pair of enantiomers?(A)They rotate the

 3690   首頁 上一頁 107 108 109 110 111 112 113 114 115 116 下一頁 尾頁