1.Which would be the best name of the following compound? Br (CHa)2CH `C02H tenoic acid -2-pentenoic acid me noic aci E) 2.Rank the following in decreasing order of acidity(most acidic on left): Br H3C-CH2-CO2H H3C-CH2-CH2OH HaC-CH-CO2H C)Z>X>Y D)Z>Y>X Ans:C Page1
Page 1 1. Which would be the best name of the following compound? CO2H H Br 3C (CH3)2CH A) 2-bromo-3-isopropylbutenoic acid B) (E)-2-bromo-3,4-dimethyl-2-pentenoic acid C) (E)-2-bromo-3-methyl-2-hexenoic acid D) (E)-2-bromo-3-methyl-2-pentenoic acid E) (Z)-2-bromo-3-methyl-2-pentenoic acid Ans: B 2. Rank the following in decreasing order of acidity (most acidic on left): H3C CH2 CO2H H3C CH CO2H Br H3C CH2 CH2OH X Y Z A) X > Z > Y B) Y > X > Z C) Z > X > Y D) Z > Y > X E) X > Y > Z Ans: C
What would be the major organic product of the following reaction? Ans:A 4.The reaction of propanoic acid with lithium aluminum hydride,followed by water. would result in what product? A) Hc-CH-8-H D)H3C-CH2-CH2OH B)HaC-CH2-COzL E)HgC-CH2-CHg C)HgC-CH2-CH2Li Ans:D Page2
Page 2 3. What would be the major organic product of the following reaction? C O OH ? heat SOCl2 A) C O Cl B) C O O C) C O OH Cl D) C O Cl Cl E) C O O C O Ans: A 4. The reaction of propanoic acid with lithium aluminum hydride, followed by water, would result in what product? A) H3C CH2 C O H D) H3C CH2 CH2OH B) H3C CH2 CO2Li E) H3C CH2 CH3 C) H3C CH2 CH2Li Ans: D
5.What would the common name of the following di-acid be? HOzC-CHz-CH2-CO2H A)Malonic acid Oxalic acid Baneaa Succinic acic 6.Which of the following sets of reagents would convert benzyl bromide to phenylethanoic acid? H.CO H,0 B) 1.Mg.ether 的 c) HCO2K* 1.NaCN 2.H',H2O,heat 7.The higher acidity of carboxylic acids compared to other functional groups is best explained by A)hydrogen bonding. D)resonance. B)electronegativity of oxygen. E)electronegativity of carbon. Page3
Page 3 5. What would the common name of the following di-acid be? HO2C CH2 CH2 CO2H A) Malonic acid D) Adipic acid B) Oxalic acid E) Glutaric acid C) Succinic acid Ans: C 6. Which of the following sets of reagents would convert benzyl bromide to phenylethanoic acid? CH2Br CH2CO2H ? A) H2CrO4 H2O B) 1. Mg, ether 2. CO2 3. H3O+ C) HCO2 - K+ D) 1. NaCN 2. H+ , H2O, heat E) both B and D Ans: E 7. The higher acidity of carboxylic acids compared to other functional groups is best explained by A) hydrogen bonding. D) resonance. B) electronegativity of oxygen. E) electronegativity of carbon. C) water solubility. Ans: D
8.What would be the name of the following? HO2CCH2CO2H Malonic acid d Ans:A 9.What would be the organic product of the following reaction? HO2CCH2CH2CO2H _heat？ A)CH;CH2CO2H CO2 B)2 CH;CO2H C) (a polymeric anhydride) 10.What reagent(s)would accomplish the following conversion? CH3CH2CO2H CH3CHBrCO2H A)Br2 B)PBr3 C)Bra/light D)Br+cat.PBra E)PBr3+cat Dr. Ans:D Page 4
Page 4 8. What would be the name of the following? HO2CCH2CO2H A) Malonic acid D) Succinic acid B) Propanoic acid E) Butanedioic acid C) Oxalic acid Ans: A 9. What would be the organic product of the following reaction? ? heat HO2CCH2CH2CO2H A) CH3CH2CO2H + CO2 B) 2 CH3CO2H C) O O O D) O O O O O O (a polymeric anhydride) n E) none of these Ans: C 10. What reagent(s) would accomplish the following conversion? CH3CH2CO2H CH3CHBrCO2H ? A) Br2 B) PBr3 C) Br2/light D) Br2 + cat. PBr3 E) PBr3 + cat. Br2 Ans: D
11.Which of the following sets of reagents would accomplish the chemical transformation shown? HgC-C-Br -C02h A 1.NaCN 2.HO',heat B) 1.Mg.ether 2.C02 3.H0 c) 1.KOH,heat 2.03 3.H202,H D) 1.HCO2H,H* 2.LiAlH 3.HO' E) 1.HCN,NaCN 2.KOH,H2O,heat 3.HO" Ans:B Page5
Page 5 11. Which of the following sets of reagents would accomplish the chemical transformation shown? CH3 C CH3 H3C Br CH3 C CH3 H3C CO2H ? A) 1. NaCN 2. H3O+, heat B) 1. Mg, ether 2. CO2 3. H3O+ C) 1. KOH, heat 2. O3 3. H2O2, H+ D) 1. HCO2H, H+ 2. LiAlH4 3. H3O+ E) 1. HCN, NaCN 2. KOH, H2O, heat 3. H3O+ Ans: B