Chem 107 - Exam #3
Refer to the disaccharide below to answer the question (s) that follow: Pentagon O(TC), /-CH2OH, \-O --->, I(R)-OH, I(L)-OH, I-HOCH2 <--- Hexagon --->\-CH2-I(TL), O(TR), /(U)-OH, \(D)-?, I(BR)-OH, I(BL)-OH, I(L)-OH 36) The compound CH3CH2NHCH3 is classified as a: A) secondary amine. B) primary amine. C) tertiary amine. D) quaternary amine. E) hydrated amine. -----> Ch. 18.1-1 <-----
A) secondary amine.
49) In the compound below, the hydroxyl group is in which position? O || CH3CH2CH C - OH | O H A) α B) β C) ε D) γ E) δ -----> Ch. 16.1-6 <-----
A) α
4) The IUPAC name for CH3CH2C ≡ CCH3 is: A) 2-pentyne. B) 2-propene. C) pentyne. D) 1-methylbutyne. E) 3-pentyne. -----> Ch. 12.1-12 <-----
A) 2-pentyne.
50) What is the IUPAC name for this compound? CH3 O | || CH3 C HCH2 C OH A) 3-methylbutanoic acid B) pentanoic acid C) 2-methyl-4-butanoic acid D) γ-methyl butyric acid E) γ-methylbutanoic acid -----> Ch. 16.1-8 <-----
A) 3-methylbutanoic acid
5) What is the IUPAC name for the following compound? CH3 Cl | | CH3 - C H - C - CH = CH | | C H3 C H3 A) 4-chloro-4,5-dimethyl-2-hexene B) 3-chloro-1,3,4-trimethyl-1-pentene C) 3-chloro-1,3,4,4-tetramethyl-1-butene D) 3-chloro-2,3-dimethyl-4-hexene E) 3-chloro-2,3,5-trimethyl-4-pentene -----> Ch. 12.1-15 <-----
A) 4-chloro-4,5-dimethyl-2-hexene.
48) Which functional group is a carboxylic acid? A) O || - C OH B) - CH2OH C) O || - C - O - D) OH | - C - OH | E) - OH -----> Ch. 16.1-1 <-----
A) O || - C OH
19) Which of these compounds is the hemiacetal that forms when ethanol reacts with propanal? A) OH | CH3CH2 C OCH2CH3 | H B) OCH2CH2CH3 | CH3 C OCH2CH2CH3 | CH2CH2CH3 C) OCH2CH3 | CH3 C OCH3 | H D) OH | CH3 C OCH2CH3 | H E) O CH2CH3 | CH3CH2 C OCH2CH3 | H -----> Ch. 14.1-5 <-----
A) OH | CH3CH2 C OCH2CH3 | H
22) Three functional groups found in this compound are: O || Hexagon \-TopR, I(T)-OH, /-CCH3, I(B)-OCH3 A) alcohol, ether, and ketone. B) alcohol, aromatic, and ether. C) cycloalkene, alcohol, and carboxylic acid. D) alcohol, aldehyde, and ether. E) aldehyde, ether, and carboxylic acid. -----> Ch. 14.1-12 <-----
A) alcohol, ether, and ketone.
38) What is the name of this compound? CH3NCH2CH3 | C H3 A) ethyldimethylamine B) trimethylamine C) ethylmethylnitride D) ethylmethylamine E) diethylamine -----> Ch. 18.1-5 <-----
A) ethyldimethylamine
46) Cyclic compounds that contain a nitrogen atom are called: A) heterocyclic compounds. B) carbocyclic compounds. C) aromatic compounds. D) homocyclic compounds. -----> Ch. 18.1-28 <-----
A) heterocyclic compounds.
31) Which of the following contains a β-1,4-glycosidic bond? A) lactose B) galactose C) amylose D) sucrose E) maltose -----> Ch. 15.1-12 <-----
A) lactose
12) What is the name for this compound? Hexagon w/ Inter-Circle I-OH A) phenol. B) cyclopentanol. C) glycerol. D) cyclohexanol. E) cyclobenzenol. -----> Ch. 13.1-10 <-----
A) phenol.
14) Tertiary alcohols cannot be oxidized because: A) there are no hydrogen atoms attached to the alcohol carbon. B) the alcohol carbon is bonded to four groups so no oxygen can be added to it. C) there are no oxygen atoms to remove from the alcohol carbon. D) the alcohol carbon is bonded to four groups so no hydrogen can be added to it. E) the alcohol carbon is too electronegative to have hydrogen removed from it. -----> Ch. 13.1-24 <-----
A) there are no hydrogen atoms attached to the alcohol carbon.
2) Which of the following pairs of compounds are structural isomers? A) Cl Cl | | CH3 C HCH2 CH3 and CH3CH2 C HCH3 B) Cl | CH3CHCH3 and CH3 C CH3 | | C H2Cl C H3 C) ClCH2CH2CH2CH3 and CH3CH2CH2CH2Cl D) CH3CHCH3 and CH3CHCH2Cl | | C H2Cl C H3 E) Hexagon with \ on inner top right and Hexagon with | on flat left -----> Ch. 12.1-2 <-----
B) Cl | CH3CHCH3 and CH3 C CH3 | | C H2Cl C H3
13) Which of the following compounds is a secondary alcohol? A) CH3OH B) CH3 - CH - OH | C H3 C) CH3 | CH3 C CH3 | O H D) OH | CH3CH2 C CH3 | C CH3 E) CH3 - CH-O-CH3 | C H3 -----> Ch. 13.1-20 <-----
B) CH3 - CH - OH | C H3
10) The condensed structural formula for 2,3-dichloro-4-methylcyclohexanol is: A) Hexagon \-OH, /-Cl, /-Cl, \-CH3 B) Hexagon I-OH, /-Cl, \-Cl, I-CH3 C) Hexagon w/ Inter-Circle I-OH, /-Cl, \-Cl, I-CH3 D) Hexagon I-OH, /-Cl, \-Cl, \-CH3 E) Hexagon \-Cl, I-OH, /-Cl, \-CH3 -----> Ch. 13.1-5 <-----
B) Hexagon I-OH, /-Cl, \-Cl, I-CH3
37) What is the name of this compound? Hexagon with inner circle, |(T)-HNCH3, \(RB)-Br A) 1-bromo-3-N-methyl aniline B) N-methyl-3-bromoaniline C) N-methyl-p-bromoaniline D) 1-bromo-3-N-methylamine benzene E) 1-methyl-5-bromoaniline -----> Ch. 18.1-3 <-----
B) N-methyl-3-bromoaniline
9) Which one of the following compounds is an alcohol? A) CH3CH2OCH2CH3 B) OH | CH3-CH-CH3 C) O || CH3CH2 C H D) CH3CH=CHCH2CH3 E) CH3SH -----> Ch. 13.1-1 <-----
B) OH | CH3-CH-CH3
24) An enantiomer is: A) a structural isomer. B) a stereoisomer that is a mirror image of another molecule. C) a cis-trans isomer. D) a stereoisomer that is not a mirror image of another molecule. E) a diastereoisomer. -----> Ch. 14.1-27 <-----
B) a stereoisomer that is a mirror image of another molecule.
39) Diethylamine and HCl react to produce: A) ethylammonium chloride. B) diethylammonium chloride. C) diethyl chloride. D) butylammonium chloride. E) ammonium chloride. -----> Ch. 18.1-9 <-----
B) diethylammonium chloride.
28) A carbohydrate that gives two molecules when it is completely hydrolyzed is known as a: A) monosaccharide. B) disaccharide. C) starch. D) trisaccharide. E) polysaccharide. -----> Ch. 15.1-1 <-----
B) disaccharide.
47) Amines can form ________ bonds with other molecules. A) triple B) hydrogen C) oxygen D) metallic E) nonpolar -----> Ch. 18.1-38 <-----
B) hydrogen
23) The oxygen atom in a carbonyl group is ________ the carbon atom. A) more electropositive than B) more electronegative than C) more soluble than D) less electronegative than E) identical in electronegativity to -----> Ch. 14.1-17 <-----
B) more electronegative than
45) When naming amines according to the IUPAC system, the -e in the corresponding alkane is replaced with: A) -ane. B) -ide. C) -amine. D) -ine. E) -amide. -----> Ch. 18.1-27 <-----
C) -amine.
18) The reduction of 3-pentanone with hydrogen in the presence of a nickel catalyst will yield: A) pentane. B) 2-pentene. C) 3-pentanol. D) pentanaldehyde. E) diethyl alcohol. -----> Ch. 14.1-2 <-----
C) 3-pentanol.
6) Which of the following pairs of compounds are cis-trans isomers? A) HC ≡ C - CH3 and CH3 - C ≡ CH B) CH3 / H > C = C < H / H and H / H > C = C < H / CH3 C) CH3 / H > C = C < CH3 / H and CH3 / H > C = C < H / CH3 D) CH3 / CH3 > C = C < H / H and H / H > C = C < CH3 / CH3 E) CH3 / CH3 > C = C < CH3 / CH3 and H / H > C = C < CH3 / CH2CH3 -----> Ch. 12.1-22 <-----
C) CH3 / H > C = C < CH3 / H and CH3 / H > C = C < H / CH3
20) Which of the following compounds contains a ketone functional group? A) CH3 - O - CH | C H3 B) O || CH3 C H C) O || CH3CH2 C CH3 D) CH3 | CH3 C OH | C H3 E) CH3CH2OCH2CH3 -----> Ch. 14.1-7 <-----
C) O || CH3CH2 C CH3
40) The amide formed in the reaction of benzoic acid and ethylamine is: A) O || Hexagon w/ inner circle, |(T)-NHCCH3 B) Hexagon w/ inner circle, |(T)-CH2NHCH2CH3 C) O || Hexagon w/ inner circle, |(T)-CNHCH2CH3 D) Hexagon w/ inner circle, |(T)-ONHCH2CH3 E) O || Hexagon w/ inner circle, |(T)-C-OH, \(BR)-NHCH2CH3 -----> Ch. 18.1-10 <-----
C) O || Hexagon w/ inner circle, |(T)-CNHCH2CH3
44) What functional group is always found in alkaloids (such as caffeine, nicotine, and digitalis)? A) ether B) amide C) amine D) ester E) acid -----> Ch. 18.1-26 <-----
C) amine
30) A glycosidic bond between two monosaccharides can also be classified as a(n): A) ester bond. B) double bond. C) ether bond. D) achiral bond. E) alcohol bond. -----> Ch. 15.1-10 <-----
C) ether bond.
Refer to the disaccharide below to answer the question (s) that follow: Pentagon O(TC), /-CH2OH, \-O --->, I(R)-OH, I(L)-OH, I-HOCH2 <--- Hexagon --->\-CH2-I(TL), O(TR), /(U)-OH, \(D)-?, I(BR)-OH, I(BL)-OH, I(L)-OH 33) Which of the following contains α-1,6-branches? A) amylose B) sucrose C) glycogen D) maltose E) cellulose -----> Ch. 15.1-19 <-----
C) glycogen
16) Thiols have structures similar to alcohols except that they contain: A) nitrogen in place of oxygen in the functional group. B) more than one carbon. C) sulfur in place of oxygen in the functional group. D) lithium in place of oxygen in the functional group. E) three alcohol groups. -----> Ch. 13.1-34 <-----
C) sulfur in place of oxygen in the functional group.
Refer to the disaccharide below to answer the question (s) that follow: Pentagon O(TC), /-CH2OH, \-O --->, I(R)-OH, I(L)-OH, I-HOCH2 <--- Hexagon --->\-CH2-I(TL), O(TR), /(U)-OH, \(D)-?, I(BR)-OH, I(BL)-OH, I(L)-OH 35) Hyperglycemia is a condition in which: A) the glucose level in the liver is lower than normal. B) the glucose level in the blood is about 100 mg/dL. C) the glucose level in the blood is higher than normal. D) the glucose level in the pancreas is lower than normal. E) the amount of glucose in the urine is lower than normal. -----> Ch. 15.1-28 <-----
C) the glucose level in the blood is higher than normal.
21) What is the IUPAC name for this compound? Hexagon ||(T)-O, /(RT)-CH3, /(LB)-CH3 A) cyclohexyl methyl ketone. B) methylcyclohexanone. C) 1,4-dimethyl-3-cyclohexanone. D) 2,5-dimethylcyclohexanone. E) 1,4-dimethyl-2-cyclohexanone. -----> Ch. 14.1-10 <-----
D) 2,5-dimethylcyclohexanone.
42) Which of the following is the reaction for the base hydrolysis of N-ethylformamide? A) O || H C NHCH2CH3 + NaOH → CH3CH2NH2 + NaHCO2 B) O O || || H C NHCH2CH3 + NaOH → H C OH + CH3CH2NH2-Na+ C) O O || || H C NHCH2CH3 + NaOH → H C O-Na+ + CH3NHCH3 D) O O || || H C NHCH2CH3 + NaOH → H C O-Na+ + CH3CH2NH2 E) O O || || H C NHCH2CH3 + NaOH → H C O-Na+ + NH3 + CH3CH3 -----> Ch. 18.1-20 <-----
D) O O || || H C NHCH2CH3 + NaOH → H C O-Na+ + CH3CH2NH2
27) An acetal is formed from two molecules of an alcohol and a(n): A) ether. B) alkyl ether. C) ester. D) aldehyde. E) carboxylic acid. -----> Ch. 14.1-37 <-----
D) aldehyde.
1) A hydrocarbon with a double bond is a(n): A) alcohol. B) saturated compound. C) alkane. D) alkene. E) alkyne. -----> Ch. 12.1-1 <-----
D) alkene
3) An unsaturated compound always: A) is aromatic. B) contains a double bond. C) is a cycloalkane. D) contains at least one double or triple bond. E) contains a triple bond. -----> Ch. 12.1-7 <-----
D) contains at least one double or triple bond.
25) How many different substituents are required on a carbon atom for it to be chiral? A) one B) two C) three D) four E) Any number from 1 to 4; chiralty does not depend on substitution. -----> Ch. 14.1-30 <-----
D) four
Refer to the disaccharide below to answer the question (s) that follow: Pentagon O(TC), /-CH2OH, \-O --->, I(R)-OH, I(L)-OH, I-HOCH2 <--- Hexagon --->\-CH2-I(TL), O(TR), /(U)-OH, \(D)-?, I(BR)-OH, I(BL)-OH, I(L)-OH 32) In the figure above, the monosaccharide unit on the left is a(n): A) aldopentose. B) aldohexose. C) ketopentose. D) ketohexose. E) aldoheptose. -----> Ch. 15.1-14 <-----
D) ketohexose.
29) Ribulose has the following structural formula. To what carbohydrate class does ribulose belong? CH2OH | C =O | H - C - OH | H - C - OH | CH2OH A) ketotetrose B) ketohexose C) aldopentose D) ketopentose E) aldotetrose -----> Ch. 15.1-1 <-----
D) ketopentose
Refer to the disaccharide below to answer the question (s) that follow: Pentagon O(TC), /-CH2OH, \-O --->, I(R)-OH, I(L)-OH, I-HOCH2 <--- Hexagon --->\-CH2-I(TL), O(TR), /(U)-OH, \(D)-?, I(BR)-OH, I(BL)-OH, I(L)-OH 34) Humans cannot digest cellulose because they: A) are poisoned by β-glycosides. B) have intestinal flora which use up β-glycosides. C) cannot digest chlorophyll. D) lack the necessary enzymes to digest β-glycosides. E) are allergic to β-glycosides. -----> Ch. 15.1-22 <-----
D) lack the necessary enzymes to digest β-glycosides.
43) In what kind of amine is the nitrogen bonded to two carbon atoms? A) amide B) primary C) tertiary D) secondary E) quaternary -----> Ch. 18.1-24 <-----
D) secondary
15) What classification of alcohol undergoes oxidation to yield a ketone? A) all classes of alcohols B) primary alcohol C) both primary and secondary alcohols D) secondary alcohol E) both secondary and tertiary alcohols -----> Ch. 13.1-23 <-----
D) secondary alcohol.
8) According to Markovnikov's rule, the hydrogen in HCl adds to the carbon in the double bond: A) attached to the end carbon. B) that has the greater number of carbon atoms attached. C) that has the smaller number of hydrogen atoms attached. D) that has the greater number of hydrogen atoms attached. E) that has the smaller number of carbon atoms attached. -----> Ch. 12.1-31 <-----
D) that has the greater number of hydrogen atoms attached.
7) The reaction of cyclohexene and Cl2 yields: A) 1-chlorocyclohexene. B) 3,4-dichlorocyclohexane. C) 1,3-dichlorocyclohexane. D) 2,3-dichlorocyclohexane. E) 1,2-dichlorocyclohexane. -----> Ch. 12.1-28 <-----
E) 1,2-dichlorocyclohexane.
11) What is the IUPAC name of this compound? OH | CH3 - C - CH3 | C H3 A) 2-propanol B) 2-methylbutanol C) propanol D) butanol E) 2-methyl-2-propanol -----> Ch. 13.1-6 <-----
E) 2-methyl-2-propanol.
17) The product of adding two molecules of an alcohol to an aldehyde in the presence of acid is a(n): A) ether. B) hemiacetal. C) hemiether. D) hydroxyl group. E) acetal. -----> Ch. 14.1-4 <-----
E) acetal.
26) The Tollens test may be used to distinguish: A) ketones from alcohols. B) alcohols from alkenes. C) esters from acids. D) acids from amines. E) aldehydes from ketones. -----> Ch. 14.1-33 <-----
E) aldehydes from ketones.
41) What is the major functional group in the following compound? O || CH3 C NHCH3 A) amine B) carboxylic acid C) ketone D) ester E) amide -----> Ch. 18.1-10 <-----
E) amide