Chem Chapter 9
27) The formula for butane is A) C4H10. B) C5H12. C) C6H14. D) C4H8.
A) C4H10.
28) The formula for heptene is A) C7H14. B) C3H8. C) C4H10. D) C5H12.
A) C7H14.
35) An example of an alkane is A) C9H20. B) C5H10. C) C7H12. D) C8H20.
A) C9H20.
25) The condensed structural formula for the molecule below is ch3 I ch3ch2cch3 I ch3 A) CH3CH2C(CH3)3. B) CH3CH2CH2(CH3)2CH3. C) CH3CH2CH2CH2CH2CH3. D) none of the above
A) CH3CH2C(CH3)3.
97) Diethyl ether is the most important of the ethers. It has the structure of A) CH3CH2OCH2CH3. B) CH3CH2OH. C) CH3CH2OCH3. D) (CH3)2CHOH.
A) CH3CH2OCH2CH3.
34) Which of the following alkanes will have the lowest boiling point? A) CH4 B) C3H8 C) C14H30 D) C22H46
A) CH4
Vinegar is a solution of ________ in water. A) acetic acid B) butyric acid C) formic acid D) propionic acid
A) acetic acid
The compound below is commonly known as O II CH3-C-CH3 A) acetone. B) acetaldehyde. C) benzaldehyde. D) formaldehyde.
A) acetone.
Alkaloids, like morphine, caffeine, nicotine and cocaine, are heterocyclic A) amines. B) amides. C) ethers. D) esters.
A) amines.
The following multifunctional compound is a(n) H O I II H- N-C-C-OH I I H H A) amino acid. B) ester. C) nucleic acid. D) protein.
A) amino acid.
Amines are derivatives of A) ammonia. B) methane. C) water. D) amino acids.
A) ammonia.
This substance is an ester of the phenol group of salicylic acid with acetic acid and is commonly called A) aspirin. B) Maalox. C) Milk of Magnesia. D) Tylenol.
A) aspirin.
Amino acids are multifunctional compounds that contain A) carboxyl and amine groups. B) carboxyl and amide groups. C) ester and amine groups. D) aldehyde and amide groups.
A) carboxyl and amine groups.
The -COOH group represents the A) carboxyl group. B) carbonyl group. C) alcohol group. D) aldehyde group.
A) carboxyl group.
One of the primary ingredients in vinegar is A) ethanoic acid. B) propanoic acid. C) formic acid. D) hydrochloric acid.
A) ethanoic acid.
A green chemistry improvement for the synthesis of Zoloft, an antidepressant, was the substitution of ________ for less environmentally-friendly solvents. A) ethanol B) toluene C) hexane D) dichloromethane
A) ethanol
The compound CH3NH2 is called A) methylamine. B) dimethylamine. C) trimethylamine. D) methyl ammonia.
A) methylamine.
13) Organic compounds are A) nonpolar and less dense than water. B) polar and less dense than water. C) nonpolar and more dense than water. D) polar and more dense than water.
A) nonpolar and less dense than water.
30) An emollient is a A) skin softener. B) sun screen. C) laxative. D) detergent.
A) skin softener.
37) All of the following are properties of hydrocarbons EXCEPT A) they have a higher density than water. B) their boiling points increase as the number of carbons increases. C) they burn readily. D) they are good solvents for nonpolar substances.
A) they have a higher density than water.
2) Approximately what percentage of known compounds are classified as organic compounds? A) ≈ 95% B) ≈ 70% C) ≈ 40% D) ≈ 20%
A) ≈ 95%
18) How many different structural isomers are there for a hydrocarbon with the formula C4H10? A) 1 B) 2 C) 3 D) 4
B) 2
The general formula for a carboxylic acid is A) ROR'. B) RCOOH. C) RCOR'. D) RCOOR'.
B) RCOOH.
The compound below is commonly known as O II Ch3-C-H A) acetone. B) acetaldehyde. C) benzaldehyde. D) formaldehyde.
B) acetaldehyde.
The name of CH3CONH2 is A) methanamide. B) acetamide. C) ethylamine. D) ethanoic acid.
B) acetamide.
The reaction between a carboxylic acid and an amine yields a(n) A) aldehyde. B) amide. C) ester. D) ketone.
B) amide.
141) Which of the following families of organic compounds does NOT contain an oxygen atom? A) alcohol B) amine C) carboxylic acid D) ketone
B) amine
Amines are A) acidic. B) basic. C) neutral. D) variable with respect to acid/base behavior.
B) basic.
One of the compounds that is present in rancid butter and body odor is A) acetic acid. B) butanoic acid. C) benzaldehyde. D) formaldehyde
B) butanoic acid.
The compound formed by the reaction of a carboxylic acid with an alcohol is a(n) A) aldehyde. B) ester. C) ether. D) ketone.
B) ester.
Many of the flavors isolated from foods are A) carboxylic acids. B) esters. C) alcohols. D) ketones.
B) esters.
The compound below is called O II H-C-H A) acetone. B) formaldehyde. C) formic acid. D) methanol.
B) formaldehyde.
The simplest aldehyde is A) acetone. B) formaldehyde. C) propionaldehyde. D) methanol.
B) formaldehyde.
The compound below is called CH3 I CH3-C-NH2 I H A) propanamide. B) isopropylamine. C) ethylamine. D) methylamine.
B) isopropylamine.
Compounds related to the heterocyclics pyrimidine and purine are constituents of A) amino acids. B) nucleic acids. C) proteins. D) plastics.
B) nucleic acids.
77) Methanol is an important solvent. It is also an important starting material for the synthesis of other molecules. Most methanol today is obtained from the A) destructive distillation of wood. B) reaction of carbon monoxide and hydrogen at high temperature and pressure. C) fermentation of corn. D) decomposition of animal waste.
B) reaction of carbon monoxide and hydrogen at high temperature and pressure.
22) Alkanes are often called A) unsaturated hydrocarbons. B) saturated hydrocarbons. C) carbohydrates. D) saturated fats.
B) saturated hydrocarbons.
63) Chlorinated hydrocarbons, such as carbon tetrachloride CCl4, make good dry cleaning solvents because A) they dissolve in water. B) they dissolve water insoluble stains, like grease and oil. C) they are not liquids at room temperature. D) they cause no significant health problems.
B) they dissolve water insoluble stains, like grease and oil.
67) With respect to reactivity on the surface of the earth, chlorofluorocarbons are A) very reactive. B) very unreactive. C) moderately reactive. D) variable depending upon the chlorofluorocarbon.
B) very unreactive.
80) A bottle contains 5% ethanol. What is the proof of alcohol in this bottle? A) 2.5 B) 5 C) 10 D) 1.7
C) 10
19) How many different structural isomers are there for a hydrocarbon with the formula C5H12? A) 1 B) 2 C) 3 D) 4
C) 3
32) Which of the following is NOT a property of alkanes? A) Alkanes are not soluble in water. B) Alkanes have a lower density than water does. C) Alkanes will undergo addition reactions. D) Alkanes will burn easily and can be used as fuels.
C) Alkanes will undergo addition reactions.
31) Which one of the following statements is NOT true of all alkanes? A) All alkanes burn to produce carbon dioxide and water. B) All alkanes consist of carbon and hydrogen. C) All alkanes exist as two or more isomers. D) All alkanes fit the general molecular formula CnH2n+2.
C) All alkanes exist as two or more isomers.
104) The general formula for a ketone is A) ROR'. B) RCOOH. C) RCOR'. D) RCOOR'.
C) RCOR'.
46) Acetylene is an A) alkane. B) alkene. C) alkyne. D) aromatic compound.
C) alkyne.
The compound below is classified as a(n) O II CH3CH2CH2C- OCH2CH3 A) aldehyde. B) carboxylic acid. C) ester. D) ketone.
C) ester.
The compound CH3CH2NHCH2CH2CH3 is called A) ethylmethylamine. B) methylpropylamine. C) ethylpropylamine. D) propylamine.
C) ethylpropylamine.
When a bee stings, one of the compounds it injects is A) acetic acid. B) butyric acid. C) formic acid. D) hydrochloric acid.
C) formic acid.
Esters are often used as A) anesthetics. B) disinfectants. C) fragrances. D) insecticides.
C) fragrances.
Esters have been widely used as A) refrigerants. B) insecticides. C) fragrances. D) disinfectants.
C) fragrances.
The compound below is a(n) O II CH3CCH3 A) carboxylic acid. B) aldehyde. C) ketone. D) alcohol.
C) ketone.
One drawback to the use of water as a solvent in the production of organic compounds is that A) the reaction times are longer. B) the organic compounds produced must be separated from water, but not from organic solvents. C) many organic compounds do not dissolve readily in water. D) processes that use water as a solvent require more energy.
C) many organic compounds do not dissolve readily in water.
The simplest carboxylic acid is commonly known as A) ethanoic acid. B) butyric acid. C) methanoic acid. D) propionicacid.
C) methanoic acid.
Amino acids are the "building blocks" of A) carbohydrates. B) fats. C) proteins. D) vitamins.
C) proteins.
This substance used as an analgesic was first isolated from willow bark. A) heptane B) formic acid C) salicylic acid D) isopropyl alcohol
C) salicylic acid
The non-carbon atom(s) generally found in heterocyclic compounds is/are A) sulfur. B) sulfur and nitrogen. C) sulfur, nitrogen and oxygen. D) halogens.
C) sulfur, nitrogen and oxygen.
The compound (CH3)3N is called A) methylamine. B) dimethylamine. C) trimethylamine. D) methyl ammonia.
C) trimethylamine.
All of the following are green chemistry innovations EXCEPT A) increased use of aqueous media as solvents. B) "on water" reactions. C) use of petroleum-based solvents. D) use of microwave reactors.
C) use of petroleum-based solvents.
The formula for the two carbon alkane is ________.
C2H6
The formula of the three carbon alkane is ________.
C3H8
20) How many different structural isomers are there for a hydrocarbon with the formula C6H14? A) 1 B) 2 C) 3 D) > 4
D) > 4
33) Which of the following alkanes will have the highest boiling point? A) CH4 B) C6H14 C) C12H26 D) C19H40
D) C19H40
The general formula for an ester is A) ROR'. B) RCOOH. C) RCOR'. D) RCOOR'.
D) RCOOR'.
The name of the compound CH3CH2CH2CONH2 is A) ethanamide. B) propylamine. C) butanoic acid. D) butanamide.
D) butanamide.
The functional group of the organic acids is the A) hydroxyl group. B) amine group. C) carbonyl group. D) carboxyl group.
D) carboxyl group.
This compound is named O II CH3Ch2Ch2C- OCH2CH3 A) propyl ethanoate. B) ethyl propanoate. C) butyl ethanoate. D) ethyl butyrate.
D) ethyl butyrate.
The compound below is a(n) O II CH3Ch2CCH3 A) alcohol. B) aldehyde. C) carboxylic acid. D) ketone.
D) ketone.
An analgesic is a substance that acts as a(n) A) fever reducer. B) disinfectant. C) anesthetic. D) pain reliever.
D) pain reliever.
The salts of carboxylic acids, such as sodium benzoate, are often used in foods as A) flavor enhancers. B) colorings. C) sweeteners. D) preservatives.
D) preservatives.
A compound that has at least one double bond is aromatic.
False
A compound that has the general formula CnH2n will be an alkyne.
False
Amines are acidic compounds.
False
Benzene has a carboxyl group attached to the ring.
False
Carboxylic acids generally have very pleasant odors.
False
Microwave reactors are used to speed up reaction rates and to increase the amount of energy needed for a reaction.
False
Most alcohols are very safe to ingest.
False
The carboxyl functional group contains both a carbonyl group and an amino group.
False
Alcohols and ethers have similar functional groups, yet they have very different properties. Discuss the structural similarities and differences between ethers and alcohols.
ROH vs ROR
How is it that a class of compounds as chemically inert as the CFCs can pose an environmental problem like the destruction of the ozone layer?
They are inert at the earth's surface, but react in the high energy environment of the ozone layer.
"On water" procedures utilize rapid stirring to produce a suspension of reactants with large surface areas to increase reaction rates.
True
A compound that contains a -NH2 group is an amine.
True
Alkaloids, such as caffeine and cocaine, are basic compounds.
True
C4H8 is an alkene.
True
C5H12 is an alkane.
True
Chlorinated hydrocarbons have been used as insecticides.
True
Diethyl ether is highly flammable.
True
More than half of the ethylene produced in the United States every year is used for the manufacture of polyethylene.
True
The reaction between hydrogen and the double bonds of alkenes is an example of an addition reaction.
True
The structure of the carbonyl group is C=O.
True
Name and draw the structure of the compound formed by the reaction of ethanol with acetic acid.
ethyl acetate, CH3COOCH2CH3
Name and draw the structure of the compound formed by the reaction of ethanol with formic acid.
ethyl formate, HCOOCH2CH3
Why do many chlorinated hydrocarbons, like DDT and PCBs, become concentrated in the tissues of animals?
fat solubility
The name of the seven carbon alkane is ________.
heptane
The name of the one carbon alkane is ________.
methane
The compound below is called O II CH3CH2-C-OH A) propanoic acid. B) ethanoic acid. C) formic acid. D) acetic acid.
propanoic acid.
What feature of carbon is probably most responsible for the fact that 95% of all compounds contain carbon? Discuss your answer briefly.
the ability of carbon atoms to form chains
81) Excessive ingestion of ethanol over a long period may cause which of the following? A) physiological addiction B) memory loss C) deterioration of the liver D) all of the above
D) all of the above
87) The main ingredient in most antifreezes is A) ethanol. B) ethylene glycol. C) glycerol. D) gasoline.
B) ethylene glycol.
15) Identify the alkane that contains three carbons. A) propene B) propane C) propyne D) propanone
B) propane
76) When wood is heated in the absence of air, the wood is destructively distilled and condensed to a liquid mixture. The primary component of this mixture is A) methanol. B) ethanol. C) rubbing alcohol. D) gasoline.
A) methanol.
53) An example of a molecular formula of an alkyne is A) C6H14. B) C5H10. C) C5H8. D) C6H6.
C) C5H8.
88) Glycerol is an alcohol with ________ hydroxyl groups A) one B) two C) three D) four
C) three
55) Which of the following is an alkyne? A) ethylene B) hexyne C) heptane D) benzene
B) hexyne
58) The formula of benzene is A) C7H7. B) C4H4. C) C6H6. D) C6H12.
C) C6H6.
43) Which of the following compounds is a homolog of CH2=CH2? A) CH3CH3 B) CH3CH2CH3 C) CH3CH=CH2 D) CH3C CH
C) CH3CH=CH2
6) The first recorded synthesis of an organic compound in a scientific laboratory was by A) Isaac Newton in 1665. B) Benjamin Franklin in 1788. C) Friedrich Wöhler in 1828. D) Thomas Edison in 1888.
C) Friedrich Wöhler in 1828.
41) What is the general formula for a cycloalkane? A) CnHn B) CnH2n+2 C) CnH2n-2 D) CnH2n
D) CnH2n
3) The most unique property of carbon is its ability to A) form four bonds. B) bond to oxygen. C) bond to nitrogen. D) bond to carbon.
D) bond to carbon.
24) The compounds CH3CH3 and CH3CH2CH3 are A) isomers. B) allotropes. C) isotopes. D) homologs.
D) homologs.
49) The formula for propyne is A) C3H6. B) C3H4. C) C3H8. D) C3H3.
B) C3H4.
64) The compound with the formula, CHCl3, was used as an anesthetic in earlier times, but has been found to have some serious side effects. The compound is called A) methyl chloride. B) methylene chloride. C) chloroform. D) carbon tetrachloride.
C) chloroform.
5) The first organic compound to be synthesized in a chemist's laboratory was A) cholesterol. B) chlorophyll. C) urea. D) benzene.
C) urea.
45) Acetylene is A) CH4. B) C2H6. C) C2H4. D) C2H2.
D) C2H2.
94) Phenol, sometimes called carbolic acid, was the first A) anesthetic. B) antiseptic. C) insecticide. D) analgesic.
B) antiseptic.
11) Petroleum jelly is A) a mixture of low carbon number hydrocarbons. B) a mixture of moderate carbon number hydrocarbons. C) a mixture of higher carbon number hydrocarbons. D) none of the above
C) a mixture of higher carbon number hydrocarbons.
90) All of the following contain more than one hydroxyl group EXCEPT A) ethylene glycol. B) glycerol. C) methanol. D) propylene glycol.
C) methanol.
71) In representing the general formula of various functional groups, the symbol R stands for A) a halogen atom. B) a ring. C) an aromatic group. D) an alkyl group.
D) an alkyl group.
17) What is the name of the compound with a formula CH3CH2CH2CH3? A) methane B) ethane C) propane D) butane
D) butane
79) A bottle of an alcoholic beverage is labelled as "60 proof." The percentage of ethanol by volume in this alcoholic beverage is A) 15%. B) 30%. C) 60%. D) 20%.
B) 30%.
29) The formula for cyclopropane is A) C3H8. B) C7H16. C) C3H6. D) C7H12.
C) C3H6.
56) Which of the following is an alkane? A) butene B) propyne C) butane D) toluene
C) butane
12) What is the name of the compound with a formula CH3CH2CH3? A) methane B) ethane C) propane D) butane
C) propane
47) A cyclic hydrocarbon containing eight carbon atoms and one double bond will have the formula A) C8H12. B) C8H18. C) C8H16. D) C8H14.
D) C8H14.
75) The formula of methanol is A) COH. B) CHOH. C) CH2OH. D) CH3OH.
D) CH3OH.
50) The hydrocarbon that is used in torches along with oxygen to produce very hot flames for cutting and welding is A) ethylene. B) methane. C) propane. D) acetylene.
D) acetylene.
57) Which of the following is an aromatic compound? A) butene B) hexyne C) ethane D) ethylbenzene
D) ethylbenzene
42) Methane, benzene, 1-butyne, and 2-pentene are all examples of A) alkenes. B) alkanes. C) aromatic compounds. D) hydrocarbons.
D) hydrocarbons.
93) A phenol has a(n) ________ group attached to a benzene ring. A) amino B) carbonyl C) carboxyl D) hydroxyl
D) hydroxyl
73) The structures that contains single bonds and an oxygen are A) alcohols and ethers. B) aldehydes and ketones. C) carboxylic acids and esters. D) alkenes.
A) alcohols and ethers.
14) A compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an A) alkane. B) alkene. C) aromatic compound. D) alkyne.
A) alkane.
38) The chemical formula of cyclopropane is A) C3H3. B) C3H6. C) C3H7. D) C3H8.
B) C3H6.
52) An example of a molecular formula of an alkene is A) C7H16. B) C5H10. C) C5H8. D) C6H6.
B) C5H10.
65) When carbon tetrachloride reacts with hot water it produces phosgene (COCl2). Phosgene was used in poison-gas warfare in World War I. Based upon this chemistry, carbon tetrachloride is no longer used in A) fire extinguishers. B) anesthetics. C) chemical reactions. D) toilet bowl cleaners.
A) fire extinguishers.
68) Perfluorocarbons are A) hydrocarbons in which all hydrogen atoms have been replaced by fluorine. B) hydrocarbons in which most hydrogen atoms have been replaced by fluorine. C) hydrocarbons in which there is one fluorine per carbon atom. D) none of the above
A) hydrocarbons in which all hydrogen atoms have been replaced by fluorine.
74) Alcohols are characterized by which functional group? A) hydroxyl B) carboxyl C) halide D) ester
A) hydroxyl
10) The simplest alkane is A) monane. B) ethane. C) methane. D) propane.
C) methane.
48) A cyclic hydrocarbon containing seven carbon atoms and two double bonds will have the formula A) C7H16. B) C7H14. C) C7H12. D) C7H10.
D) C7H10.
95) Compounds that have two alkyl groups attached to an oxygen atom are called A) alcohols. B) phenols. C) esters. D) ethers.
D) ethers.
26) The condensed structural formula for the molecule below is CH3 I CH3Ch2CH I Ch3 A) CH3CH2C(CH3)2CH3. B) CH3CH2CH(CH3)2. C) CH3CH2CH2CH2CH2CH3. D) none of the above
B) CH3CH2CH(CH3)2.
84) Which substance causes fetal alcohol syndrome? A) CH3OH B) CH3CH2OH C) CH3CHOHCH3 D) CH3OCH3
B) CH3CH2OH
21) Which of the following is NOT a reason for the great variety of organic molecules? A) The ability of carbon to form chains B) Carbon atoms can form more than four bonds. C) Isomerism D) Carbon forms bonds with a variety of elements, including H, O, N, Cl and Br.
B) Carbon atoms can form more than four bonds.
60) The correct structure for benzene was proposed by ________ in 1865. A) Boyle B) Kekule C) Faraday D) Curie
B) Kekule
The compound below is a(n) O II CH3Ch2C-H A) carboxylic acid. B) aldehyde. C) ketone. D) alcohol.
B) aldehyde.
7) The element whose atoms have a unique ability to bond to each other and to other kinds of atoms is A) sodium. B) carbon. C) sulfur. D) nitrogen.
B) carbon.
82) Ethanol acts as a mild A) stimulant. B) depressant. C) hallucinogen. D) narcotic.
B) depressant.
16) What is the name of the compound that has the formula CH3CH3? A) methane B) ethane C) propane D) butane
B) ethane
51) Which of the following compounds is saturated? A) pentene B) ethane C) butyne D) pentadiene
B) ethane
92) CH3CH2OCH3 is called A) ethyl propyl ether. B) ethyl methyl ether. C) butyl propyl ether. D) dimethyl ether.
B) ethyl methyl ether.
72) In organic chemistry, compounds are generally classified by A) state. B) functional group. C) color. D) odor.
B) functional group.
70) Chlorinated hydrocarbons have been used as A) fuels. B) insecticides. C) propellants. D) refrigerants.
B) insecticides.
83) Rubbing alcohol contains A) ethanol. B) isopropyl alcohol. C) n-propyl alcohol. D) methanol.
B) isopropyl alcohol.
9) The unique aspect of a saturated hydrocarbon is that it must contain A) only carbon and hydrogen. B) only single bonds. C) single and double bonds. D) single, double and triple bonds.
B) only single bonds.
23) Compounds with the same number and kinds of atoms but with different structures are known as A) homologs. B) isotopes. C) isomers. D) allotropes.
C) isomers.
1) Organic chemistry is most broadly defined as A) the chemistry of living systems. B) the chemistry of substances produced by living systems. C) the chemistry of the compounds of carbon. D) the chemistry of the non-metallic compounds.
C) the chemistry of the compounds of carbon.
39) The chemical formula of cyclohexane is A) C6H6. B) C6H8. C) C6H10. D) C6H12.
D) C6H12.
62) A molecular formula of an aromatic hydrocarbon is A) C10H18. B) C8H16. C) C7H10. D) C6H6.
D) C6H6.
69) Perfluorocarbons have been used in which of the following? A) temporary blood substitutes B) nonstick cooking surfaces C) oxygen solvent for treatment of premature babies D) all of the above
D) all of the above
99) Aldehydes and ketones share a common functional group. The group is the A) hydroxyl group. B) phenol group. C) ether group. D) carbonyl group.
D) carbonyl group.
66) In general, CFCs are A) solids with high melting points. B) solids with low melting points. C) liquids with high boiling points. D) gases or liquids with low boiling points.
D) gases or liquids with low boiling points.
36) A compound that contains only carbon and hydrogen is a(n) A) alcohol. B) carbohydrate. C) homolog. D) hydrocarbon.
D) hydrocarbon.
91) Compounds with a hydroxyl group attached directly to a benzene ring are called A) alcohols. B) aromatic hydrocarbons. C) ethers. D) phenols.
D) phenols.
8) Carbon is almost always A) monovalent. B) divalent. C) trivalent. D) tetravalent.
D) tetravalent.
85) Citronellol, C10H19OH, is a constituent of rose and germanium oils. It is used in perfumery. Chemically, citronellol is an A) alcohol. B) acid. C) alkane. D) amine.
A) alcohol.
4) The term "organic" refer to foods that A) are grown using "all-natural" methods and without the use of synthetic pesticides or herbicides. B) contain no organic compounds. C) contain only organic compounds. D) are grown hydroponically.
A) are grown using "all-natural" methods and without the use of synthetic pesticides or herbicides.
78) The intoxicating alcohol in "alcoholic" beverages is A) ethanol. B) methyl alcohol. C) 1-propanol. D) rubbing alcohol.
A) ethanol.
54) Which of the following is an alkene? A) ethylene B) butyne C) cyclohexane D) xylene
A) ethylene
98) The smallest cyclic ether is called A) ethylene oxide. B) ethylene glycol. C) ethanol. D) diethyl ether.
A) ethylene oxide.
59) Benzene is an unsaturated hydrocarbon. Which of the following is NOT a property of benzene? A) Benzene is a liquid at room temperature. B) Benzene undergoes the same reactions that other unsaturated hydrocarbons do. C) Benzene contains only carbon and hydrogen. D) Benzene has a ring of carbon atoms in its structure.
B) Benzene undergoes the same reactions that other unsaturated hydrocarbons do.
40) The chemical formula of cyclopentane is A) C5H6. B) C5H8. C) C5H10. D) C5H12.
C) C5H10.
89) Which of the following statements about industrial grade ethanol and the ethanol used in alcoholic beverages is NOT correct? A) Industrial grade ethanol is made by reacting ethylene with water, while ethanol used in beverages is made by fermentation. B) Industrial grade ethanol carries no federal excise tax, while ethanol used in beverages is taxed. C) Industrial grade ethanol and ethanol used in beverages have different molecular structures. D) Noxious substances are added to industrial grade ethanol so it is not safe to drink.
C) Industrial grade ethanol and ethanol used in beverages have different molecular structures.
96) Methyl tert-butyl ether (MTBE, CH3OC(CH3)3) has been used as a gasoline additive. MTBE is an example of an ether with the general structure A) ROR. B) ROH. C) ROR'. D) R'OH.
C) ROR'.
86) A homologous series of alcohols contains A) the same number of carbon atoms, but a different number of hydroxyl groups. B) the same number of carbon atoms and the same number of hydroxyl groups. C) a different number of carbon atoms, but the same number of hydroxyl groups. D) only isomers.
C) a different number of carbon atoms, but the same number of hydroxyl groups.
61) Organic compounds that contain a benzene ring or possess certain properties similar to those of benzene are called ________ compounds. A) alkaloid B) acidic C) aromatic D) saturated
C) aromatic
44) The most important commercial organic compound is A) methane, CH4. B) ethane, CH3CH3. C) ethylene, CH2 CH2. D) propane, CH3CH2CH3.
C) ethylene, CH2 CH2.
