Review for Exam 3

Review for Exam 3

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Review for Exam 3

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1. Review for Exam 3 Spring 2007

2. 1. In organic compounds which of the following elements normally forms two covalent bonds? A carbon B hydrogen C nitrogen D oxygen

3. 2. Which of the following is an example of a secondary amine? A CH3NH2 B CH3CH2NH2 C CH3CH2CH2NH2 D CH3CH2NHCH3

4. 3. Eicosane is a 20-carbon alkane. How many hydrogen atoms are in a molecule of eicosane? A 38 B 40 C 42 D 44

5. 4. Of the compounds listed here, which is not an isomer of the other two? A 2,3-dimethylpentane B 3-methylhexane C 3-ethylpentane D none, they are all isomers of one another

6. 5. What is the IUPAC name of CH3CHCH2CH3 CH3C-CH3 CH3CHCH3 ? A 2-isopropyl-2,3-dimethylpentane B 2-sec-butyl-2-isopropylpropane C 2,3,3,4-tetramethylhexane D none of these

7. 6. Cis-trans isomers exist for which of the following molecules, all of which have the formula C6H12? A 4-methyl-2-pentene B 2-methyl-1-pentene C 2-methyl-2-pentene D all of them

8. 7. What type of alcohol is formed by the hydration of 3-methyl-2-pentene? A primary B secondary C tertiary D none of these, the product is not an alcohol

9. 8. Which of the following is the IUPAC name for sec-butyl alcohol? A 1-butanol B 2-butanol C 2-methyl-1-propanol D 2-methyl-2-propanol

10. 9. Which of the following alcohols is most soluble in water? A 1-pentanol B 1,5-pentanediol C 1,3,5-pentanetriol D none, they are all equally soluble

11. 10. Which of the following is obtainable by the oxidation of sec-butyl alcohol? A 2-methylpropanoic acid B 2-oxobutanoic acid C both A and B D neither A nor B

12. 11. Which of the following correctly gives the order of boiling points for the pentanol, diethyl ether and hexane? A hexane>diethyl ether>pentanol B hexane>pentanol>diethyl ether C pentanol>diethyl ether>hexane D pentanol>hexane>diethyl ether

13. 12. What is the IUPAC name for sec-butyl mercaptan? A 2-butanethiol B 2-methyl-2-propanethiol C 2-methyl-2-propanethiol D none of these

14. 13. How many moles of oxygen are consumed during the complete combustion of one mole of ethanol? A 1 B 2 C 3 D 4

15. 14. Given the compounds 2-methyl-1-pentene and 3-methyl-1-pentene which of the following is true? A Only 2-methyl-1-pentene is chiral B Only 3-methyl-1-pentene is chiral C Both are chiral D Neither is chiral

16. 15. What is the common name of (CH3)2NCH2CH3? A ethyldimethylamine B dimethylethylamine C 1,1-dimethylethylamine D none of these

17. 16. Which of the following has the lowest boiling point? A butane B 1-propanone C 1-propanol D 2-propaname

18. 17. What is the IUPAC name of propyl isobutyl ketone? A 4-octanone B 2-methyl-4-heptanone C 3-methyl-4-heptanone D 2,2-dimethyl-3-hexanone

19. 18. In which of the following do the compounds have the closest boiling points? A 2-butanone and butanal B 2-butanone and diethyl ether C diethyl ether and butanal D 2-butanone and 1-butanol

20. 19. Which of the following is least soluble in water? A 2-butanone B 2-heptanone C 2-hexanone D 2-pentanone

21. 20. Which of the following is obtained by oxidizing 2-hexanone? A hexanal B hexanol C hexanoic acid D none of these

22. 21. Which of the following is obtained by the reduction of pentanal? A pentene B 1-pentanol C 2-pentanol D 3-pentanol

23. 22. The reaction of which combination of reactants results in the formation of a hemiacetal? A ketone and alcohol B ketone and aldehyde C ketone and carboxylic acid D carboxylic acid and alcohol

24. 23. What is the name of the compound produced by the reaction of benzoic acid with sodium hydroxide? A benzoic sodate B benzoic sodide C sodium benzide D sodium benzoate

25. 24. Which of the following is produced by the acid-catalyzed hydrolysis of methyl propanoate? A methanol and propanoic acid B methanol and a propanoate salt C propanol and formic acid D propanol and a formate salt

26. 25. What is produced when acetamide is hydrolyzed in a solution which contains sodium hydroxide? A sodium acetate and acetic acid B sodium acetate and ammonia C acetic acid and ammonium chloride D acetic acid and ammonia

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