Organic Chemistry 11th Edition Test Bank

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Package title: Solomons Test BankCourse Title: Solomons 11eChapter Number: 1Question type: Multiple choice1) Which of the following best describes the origin of carbon atoms?a) The Big Bangb) amino acids found on meteoritesc) byproduct of chemical fusion in starsd) gradual decay of radioactive isotopes of nitrogene) All of these choices.Answer: CTopic: GeneralSection: 1.1Difficulty Level: Easy2) Credit for the first synthesis of an organic compound from an inorganic precursor is usuallygiven to ___.a) Berzeliusb) Arrheniusc) Kekuled) Wohlerd) LewisAnswer: DTopic: GeneralSection: 1.1Difficulty Level: Easy3) The greatest degree of ionic character is anticipated for the bond betweena) H and C.b) H and Cl.c) C and Cl.d) H and Br.e) Br and Cl.1

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Answer: BTopic: Atomic Orbitals, Periodic Trends, ElectronegativitySection: 1.3Difficulty Level: Easy4) Select the least electronegative element from the list below.a) Pb) Nc) Mgd) Sie) KAnswer: eTopic: Periodic Trends, ElectronegativitySection: 1.3Difficulty Level: Easy5) Select the most electronegative element from the list below.a) Hb) Oc) Nd) Be) CAnswer: BTopic: Periodic Properties, ElectronegativitySection: 1.3Difficulty Level: Easy6) Which of these substances contain both covalent and ionic bonds?a) NH4Clb) H2O2c) CH4d) HCNe) H2SAnswer: A2

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Topic: BondingSection: 1.3Difficulty Level: Medium7) Which type of bonding is present in the compound CH3Li?a) Ionic bondingb) Covalent bondingc) Hydrogen bondingd) Ionic and Covalent bondinge) Ionic, Covalent, and Hydrogen bondingAnswer: DTopic: BondingSection 1.3Difficulty Level: Medium8) Which of the following is the Lewis structure for CH3CH2O2H?a)HCCHHHOOHHb)HCOHHCOHHc)HCCHHOOHHHd)HCOHHCOHHHe) None of these choices.Answer: ATopic: Lewis StructuresSection: 1.4Difficulty Level: Medium9) In which of the following does the central atom have 2 pairs of non-bonding electrons?3

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a) O3b) CO2c) CO32−d) NH4+e) H2SAnswer: ETopic: Lewis StructuresSection: 1.4Difficulty Level: Medium10) Which is NOT a correct Lewis structure?a)NHFH. .. . :b)CHFHH:....c)OHO. .. .H. .. .d)OBOO. .. .::. .. .HHHe) None of these choices.Answer: ATopic: Lewis Structures, Formal ChargesSection: 1.4Difficulty Level: Medium11) Which of these is a correct electron-dot representation of the nitrite ion, NO2-?4

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IVIIIIIIV:O:N: :O:O: :N:O::O: :N: :O:O:N:O::O: :N:O. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .a) Ib) IIc) IIId) IVe) VAnswer: ATopic: Lewis Structures, Formal ChargesSection: 1.4Difficulty Level: Medium12) Which of the following is the Lewis structure for CH3CO2H?a)HCCHHHOOHHb)c)CHHHCOOHd)HCCHHOOHe)HCOHHCOHAnswer: D5

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Topic: Lewis StructuresSection: 1.4Difficulty Level: Hard13) Considering Lewis structures, which of these compounds possesses a single unpairedelectron?a) N2b) N2Oc) NOd) N2O4e) O2Answer: CTopic: Lewis StructuresSection: 1.4Difficulty Level: Hard14)YZY....is a generalized structural representation which can be used for all of thefollowing, except:a) H2Ob) H2Oc) H2Sd) BeH2e) There is no exception.Answer: DTopic: Lewis StructuresSection: 1.4Difficulty Level: Hard15) Expansion of the valence shell to accommodate more than eight electrons is possible with___.a) fluorineb) nitrogenc) carbond) sulfure) beryllium6

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Answer: DTopic: Lewis Structures, Formal ChargesSection: 1.2, 1.4Difficulty Level: Easy16) What is the formal charge on oxygen in the following structure?H3CCOa) +2b) +1c) 0d) -1e) -2Answer: BTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy17) What is the formal charge on carbon in the following structure?a) +2b) +1c) 0d) -1e) -2Answer: CTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy18) In which structure(s) below does the oxygen have a formal charge of +1?OCHHOHOHHHOH3CC3CH3IIIIIIVI. .. .. .. .:. .HHs7

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a) I onlyb) II onlyc) I and IIId) I and IVe) I, III, and IVAnswer: ETopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy19) Which structure(s) contain(s) an oxygen that bears a formal charge of +1?OH3CCH3CH3IVOH3CHHIIIOCOIIOCHOIOCOOV. .. .. .:: . .. .. .:::. .. .:::. . ::a) I and IIb) III and IVc) Vd) IIe) I and VAnswer: BTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy20) Which of the following compounds contain a sulfur atom that bears a +1 formal charge?a) H2Sb) SO2c) SF6d) MgSO4e) H2SO4Answer: BTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Medium8

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21) Which of the following molecules or ions has a nitrogen with a formal charge of -1?a)NHH. .:b)NHHH. .c)NHC3H. .Hd)NH3CC3H. .He)CH3CN:Answer: ATopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy22) In which structure(s) below does nitrogen have a formal charge of +1?NH3CC3CH3NH3CCH2HNH3CHNH2H3CIVIIIIIIVNHOHH. .. .. .. .. .. .. .Ha) Ib) II and IVc) III and Vd) I and Ve) VAnswer: ATopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy23) Which of the following is an ion with a negative one charge?a)OH3C. . :. .9

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b)ONO. . :: . .. .. .c)ONOO. .. .::::: . .d) All of these choices.e) None of these choices.Answer: DTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy24) Wha is the formal charge on oxygen in the following structure?tOH3CC3CH3. .Ha) +2b) +1c) 0d) -1e) -2Answer: BTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy25) Listed below are electron dot formulas for several simple molecules and ions. All valenceelectrons are shown; however, electrical charges have been omitted deliberately.HHHHHHIIIIIIIVVH:Be:HH:B:HH:N:HH:N:HH:O:H. .. .. .. .. .. .. .. .Which of the structures actually bear(s) a positive charge?a) Ib) II10

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c) IIId) III and Ve) IV and VAnswer: ETopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy26) Listed below are electron dot formulas for several simple molecules and ions. All valenceelectrons are shown; however, electrical charges have been omitted deliberately.HHHHHHIIIIIIIH:Be:HH:B:HH:N:HH:N:HH:O:H. .. .. .. .. .. .. .. .VVWhich of the structures is negatively charged?a) Ib) IIc) IIId) IVe) VAnswer: BTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy27) The formal charge on sulfur in sulfuric acid is:SOOOOHHa) 0b) -1c) +1d) -2e) +211

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Answer: ATopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Easy28) In which of these cases does the central atom have a zero formal charge?a) HFHb)OH3CC3HHc)BFFFFd)NH3CC3HHHe)CH3CC3CH3CH3HAnswer: ETopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Medium29) Which compound contains a nitrogen atom with a formal positive charge?HNNNIIIIIIa) Ib) IIc) IIId) More than one of these choices.e) None of these choices.12

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Answer: DTopic: Lewis Structures, Formal ChargesSection: 1.5Difficulty Level: Medium30) Which of the following is a set of constitutional isomers?BrBrBrBrIVIIIIIIa) I and IIb) II and IIIc) I, II, and IIId) II, III, and IVe) I, III, and IVAnswer: ETopic: IsomerismSection: 1.6Difficulty Level: Easy31) CH3CH2OCH2CH3and CH3CH2CH2CH2OH are examples of what are now termed:a) Conformational isomersb) Resonance structuresc) Functional isomersd) Empirical isomerse) Constitutional isomersAnswer: ETopic: IsomerismSection: 1.6Difficulty Level: Easy32) Which of the following structures represent compounds that are constitutional isomers ofeach other?13

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IIIIIIIVa) I and IIb) I and IIIc) I, II, and IIId) I, II, III, and IVe) II and IIIAnswer: CTopic: IsomerismSection: 1.6Difficulty Level: Easy33) Which compound is not a constitutional isomer of the others?IIIIIIIVNOONHNONOa) Ib) IIc) IIId) IVe) All of these choices are isomers of each other.Answer: DTopic: IsomerismSection: 1.6Difficulty Level: Easy34) Consider the following:CH3CH2CH=CHCH2CH3CH3CH2CH2CH2CH=CH2IIICH3CH=CHCH2CH2CH3CH2=CHCH2CH2CH2CH3IIIIV14

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Which two structures represent the same compound?a) I and IIb) II and IIIc) I and IIId) II and IVe) None of these choices.Answer: DTopic: IsomerismSection: 1.6Difficulty Level: Easy35) Which of the following represent a pair of constitutional isomers?a)andb) CH3CH=CH2and CH2=CHCH3c)HBrBrHBrBrHHandd)BrBrHHHBrHBrande) More than one of these choices.Answer: ETopic: IsomerismSection: 1.6Difficulty Level: Easy36) Which of the following represent pairs of constitutional isomers?a)OHOOOandb)HCH3BrHBrCH3HHand15

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