CHEM233 Organic Chemistry I with Lab | CHEM233 Lessons 1-4 Quizzes and Midterm Exam merged | Answered and marked already; Summer 2025/2026.

Lesson 1 Quiz - Results Attempt 1 of 1 Written Mar 17, 2025 8:24 PM - Mar 17, 2025 8:49 PM Released Mar 21, 2025 11:55 PM Attempt Score 56 / 100 - 56 % Overall Grade (Highest Attempt) 56 / 100 - 56 % Question 1 4 / 4 points Which of the following electron configurations represents the electron configuration for a magnesium cation? Question options: 1s22s22p63s23p2 1s22s22p6 1s22s22p4 1s22s22p63s2 None of the choices are correct. Question 2 0 / 4 points Which of the following is the Lewis structure for carbon dioxide? Question options:None of the choices are correct. Question 3 0 / 4 points What are the hybridization of carbons 1 and 2 respectively in cyclopentene? Question options: sp2 and sp2 sp2 and sp3 None of the choices are 3 and sp sp3 and sp2 Question 4 0 / 4 points What is the hybridization of carbon atom E in Cinnamoside? Question options: sp2 unhybridizedsp3 sp Question 5 4 / 4 points What is the hybridization of carbon atom J in timolol? Question options: sp sp2sp3 unhybridized sp3d Question 6 0 / 4 points What is the hybridization of sulfur atom B in timolol? Question options: sp2unhybridized sp3d sp3 sp Question 7 4 / 4 points The molecular orbital diagram for the carbide anion (C22-) would have which of the following molecular orbital configurations? Question options: (σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4(σ2p)2 (σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4 (σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4(σ2p)2(π*2p)4 (σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4(σ2p)2(π*2p)2 Question 8 4 / 4 points Which of the following orbital diagrams represents the silicon atom? Question options:More than one of the choices is correct.Question 9 0 / 4 points How many lone pairs of electrons will be present in the following molecule? CH3–N=N=N Question options: 4 0 3 1 2 Question 10 4 / 4 pointsWhat do fluorine atoms tend to do when they form chemical compounds with metals? Question options: None of the answers are correct. gain electrons lose electrons fluorine atoms do not form compounds with other atoms. they usually share electrons equally with metals. Question 11 0 / 4 points What is the total number of σ bonds found in the following compound? Question options: 15 22 118 10 Question 12 4 / 4 points What is the best estimate of the magnitude of the bond angle around atom D in Cinnamoside? Question options: 109.5o 180o104.5o 120o 107.3o Question 13 4 / 4 points Identify the term for any species that can accept electrons. Question options: Electronegativity Lewis Acid Brønsted-Lowry Acid Brønsted-Lowry Base Lewis Base Question 14 4 / 4 points What are the orbitals of the reactants which interact in the Lewis acid-base reaction between BH3 and H2O? Question options:an empty p orbital on boron and a non-bonding lone pair on oxygen. a filled σ orbital on boron and an empty σ* orbital on oxygen. an empty sp3 orbital on boron and a non-bonding long pair on oxygen. an empty s orbital on the hydrogen and a filled σ orbital on boron. Question 15 0 / 4 points Which of the following representations are resonance structures? Question options: and Question 0 / 416 points What is the formal charge of carbon atom J in timolol? Question options: -2 0 +2 -1 +1Question 17 4 / 4 points The following is generic depiction of a reaction using the curved arrow notation. Which of these statements is not correct for this reaction? Question options: Electrons move from C to B. Electrons move from B to A. In the products, a bond forms between C and B. None are correct. In the products, A would have a positive charge. Question 18 4 / 4 points Identify the term for the ability of an atom to attract the shared electrons in a covalent bond. Question options: Lewis BaseElectronegativity Brønsted-Lowry Base Brønsted-Lowry Acid Lewis Acid Question 19 0 / 4 points What is the formal charge of sulfur atom B in timolol? Question options:-1 +1 0 +2 -2 Question 20 4 / 4 points Which of the following statements is not true for ethylene? Question options: C=C bond length is shorter than the C-C length in ethane. The entire molecule has a planar geometry. Both carbons are sp2 hybridized. The two bonds in C=C are equally strong.The molecule has a dipole moment of zero. Question 21 4 / 4 points Which of the following would represent the strongest acid? Question options: Ka = 2.5 x 10-1 pKa = 4.60 pKa = 14.5 Ka = 2.5 x 10-5 Question 22 0 / 4 points Identify the term for a compound that can accept a proton. Question options: Lewis Acid Lewis Base ElectronegativityBrønsted-Lowry Acid Brønsted-Lowry Base Question 23 0 / 4 points Identify the term for a compound that can donate a proton. Question options: Lewis Acid Electronegativity Brønsted-Lowry Base Brønsted-Lowry Acid Lewis Base Question 24 4 / 4 points How many resonance forms can be drawn for the NO3– ion? Question options: 41 3 The nitrate ion does not exhibit resonance. 2 Question 25 4 / 4 points Which molecule is the Lewis acid, considering the following mechanism? Question options: A B Neither is a Lewis acid.Both are Lewis acids.Lesson 2 Quiz - Results Attempt 1 of 1 Written Mar 24, 2025 8:43 PM - Mar 24, 2025 9:44 PM Released Apr 4, 2025 11:55 PM Attempt Score 92 / 100 - 92 % Overall Grade (Highest Attempt) 92 / 100 - 92 % Question 1 4 / 4 points Pick out the conformation for butane which has the gauche conformation. Question options:Question 2 4 / 4 points Identify the more stable of the two pictured molecules: Question options: Question 3 4 / 4 points If an acyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it also contain? Question options: 2n 2n+2n+2 n-2 n Question 4 4 / 4 points How many secondary hydrogens does the following compound contain? Question options: 2 4 8 12 15Question 5 4 / 4 points How many degrees of unsaturation does the following structure have (lone-pairs are not shown)? Question options: 5 3 7 6 4 Question 6 4 / 4 points Which of these molecules has the lowest boiling point? Question options:Question 7 4 / 4 points The molecules shown in Fischer projections below are: Question options: both conformational isomers and structural isomers. gauche isomers. conformational isomers. structural isomers. Question 8 4 / 4 points Which of the following molecules have the highest heat of combustion? Question options: CH3CH2CH2CH2CH3 CH3CH2CH3 CH4 CH3CH3 CH3CH2CH2CH3 Question 9 4 / 4 points Identify the circled functional group found in Penicillin G. Question options:amine aldehyde carboxylic acid carbonyl hydroxyl Question 10 4 / 4 points Which of the following is an aldehyde? Question options:Question 11 4 / 4 points The energy barrier for carbon-carbon bond rotation in propane is mainly due to: Question options: angle strain torsional strain bond strain steric strain Question 12 4 / 4 points Identify the circled functional group found in Kevlar.Question options: ether amine ester amide carbonyl Question 13 4 / 4 points Identify the more stable of the two pictured molecules: Question options:They are of equal stability. Question 14 4 / 4 points Which of the following statements regarding cyclohexane is false? Question options: At equilibrium, 99% of the cyclohexane molecules are in a chair conformation. A chair conformation of cyclohexane has no torsional strain. A cyclohexane ring never exists in a boat conformation. Question 15 4 / 4 points What is the empirical formula for cyclopentane?Question options: CH2 C5H10 C2H4 CH C5H5 Question 16 4 / 4 points What is the IUPAC name for: Question options: 2,3-dimethyl-1-ethylcyclohexane 1-ethyl-2,3-dimethylcyclohexane 1,2-dimethyl-3-ethylcyclohexane1,6-dimethyl-5-ethylcyclohexane 1-ethyl-5,6-dimethylcyclohexane Question 17 0 / 4 points Pick out one of the following compounds which does not possess a plane of symmetry: Question options: trans-1-bromo-3-fluorocyclobutane cis-1,2-dimethylcyclopropane trans-1,4-dibromocyclohexane trans-1,2-dihydroxycyclohexane cis-1,3-dihydroxycyclopentane Question 18 4 / 4 points Which of the statements below correctly describes the chair conformations of trans-1,3-diethylcyclohexane. Question options: The lower energy chair conformation contains two equatorial ethyl groups.The two chair conformations are of equal energy. The lower energy chair conformation contains two axial ethyl groups. The higher energy chair conformation contains two axial ethyl groups. The higher energy chair conformation contains two equatorial ethyl groups. Question 19 4 / 4 points Which of the following statements is not correct regarding the reactivity of cycloalkanes? Question options: Cycloalkanes react with acids and bases. Cycloalkanes are generally inert. Cycloalkanes react with halogens or with oxygen. Cycloalkanes are often used as solvents for chemical reactions. Question 20 4 / 4 points What is the dihedral angle between the methyl groups in the conformer that has the smallest molecular dipole moment in the pictured molecule?Question options: 30o 120o 180o 60o 0o Question 21 4 / 4 points What type of strain most influences the stability of small ring compounds? Question options: torsional van der Waal's angleflagpole dipole-dipole Question 22 4 / 4 points Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene? Question options: cyclohexane cyclobutane cyclopentane cyclopropane cyclopentane cyclopropane cyclobutane cyclohexane cyclopropane cyclopentane cyclobutane cyclohexane cyclopropane cyclobutane cyclohexane cyclopentane cyclohexane cyclopentane cyclobutane cyclopropane Question 23 4 / 4 points Which of the following substituents would produce the greatest amount of 1,3-diaxial strain when substituted for Cl in the following structure?Question options: H C(CH3)3 CO2H OH CN Question 24 4 / 4 points Select the IUPAC name for: Question options: trans-1,3-dibromocyclopentane dibromopentanetrans-1,4-dibromocyclopentane cis-1,3-dibromocyclopentane cis-1,4-dibromocyclopentane Question 25 0 / 4 points How many gauche/diaxial interactions are present in cis-1,2-dimethylcyclohexane? Question options: 1 gauche and 1 diaxial interactions 2 gauche and 1 diaxial interactions 2 gauche and 2 diaxial interactions 1 gauche and 2 diaxial interactionsLesson 3 Quiz - Results Attempt 1 of 1 Written Apr 9, 2025 9:49 PM - Apr 9, 2025 11:05 PM Released Apr 18, 2025 11:55 PM Attempt Score 84 / 100 - 84 % Overall Grade (Highest Attempt) 84 / 100 - 84 % Question 1 4 / 4 points Predict the number of stereoisomers for the following molecule: CH3CH2CH(OH)CH(Cl)CH3 Question options: 4 1 0 2 3 Question 2 4 / 4 points Pick out the physical property that is different for a pair of enantiomers:Question options: density color refractive index boiling point optical rotation Question 3 0 / 4 points Label the relationship between the pair of compounds below: Question options: Diastereomers Constitutional Isomers EnantiomersIdentical Question 4 4 / 4 points What is the configuration of the stereocenters in the following molecule? Question options: (R,S) (R,R) None of these choices. (S,S) Question 5 4 / 4 points Pick out the following molecules which can be resolved to be optically active at room temperature: Question options: andand and and and Question 6 0 / 4 points Which of the following compounds is achiral? Question options: (2R,4S)-2,4-dichloropentane Two of these compounds are achiral. (2S,4R)-2,4-dichloropentane (2R,3R)-2,3-dichloropentane(2R,3S)-2,3-dichloropentane Question 7 4 / 4 points If a solution of a compound (30.0 g/100. mL of solution) has a measured rotation of +15o in a 2.0 dm tube, the specific rotation is: Question options: +15.0o +25.0o +4.00o +50.0o +7.50o Question 8 4 / 4 points Label the relationship between the pair of compounds below: Question options:Constitutional Isomers Diastereomers Identical Enantiomers Question 9 0 / 4 points Which of the following molecules are chiral? Question options: andQuestion 10 4 / 4 points Determine the stereochemistry of compound below: Question options: S racemic R achiral Question 11 4 / 4 points Name the enantiomeric pairs: Question options: , and ,None of the choices. , , , Question 12 0 / 4 points Which of the following is the enantiomer of the following compound? Question options:Both II and III It does not have an enantiomer. Question 13 4 / 4 points Classify the overall reaction below as a(n): Question options: Substitution Addition Rearrangement Brønsted Acid-BaseElimination Question 14 4 / 4 points A reaction that has a ΔHo = -14.7 kJ and a ΔSo = 35.7 J/(K.mol), will: Question options: have a very small Keq. will proceed rapidly. be exergonic. none of these choices. has a positive ΔGo Question 15 4 / 4 points In an addition reaction of an alkene, the π bond plays the role of: Question options: nucleophile leaving groupnucleophile and electrophile electrophile electrophile and leaving group Question 16 4 / 4 points The reaction shown below is best described as: Question options: a rearrangement reaction. a substitution reaction. an elimination reaction. an addition reaction. Question 17 4 / 4 points Classify the overall reaction below as a(n):Question options: Substitution Elimination Brønsted Acid-Base Rearrangement Addition Question 18 4 / 4 points Which of the following is considered an initiation reaction: Question options:Question 19 4 / 4 points The reaction shown below is best described as: Question options: a substitution reaction. an addition reaction. an elimination reaction. a rearrangement reaction. Question 20 4 / 4 points Classify the overall reaction below as a(n):Question options: Substitution Addition Elimination Rearrangement Brønsted Acid-Base Question 21 4 / 4 points Which of the following is considered an termination reaction: Question options: Question 4 / 422 points Which of the following reactions which would be exothermic: Question options: Question 23 4 / 4 points Consider the following reaction. Which species is the nucleophile? Question options:None of these choices. Question 24 4 / 4 points Pick out the weakest nucleophile in a polar protic solvent: Question options: FClBrAll are equivalent nucleophiles. IQuestion 4 / 425 points In a radical reaction, the following step is an example of a ______ step. Question options: substitution termination propagation addition initiationLesson 4 Quiz - Results Attempt 1 of 1 Written Apr 27, 2025 10:42 PM - Apr 27, 2025 11:42 PM Released May 2, 2025 11:55 PM Attempt Score 64 / 100 - 64 % Overall Grade (Highest Attempt) 64 / 100 - 64 % Question 1 4 / 4 points Which of the following molecules is (3E)-5-chloro-4-methyl-2-hydroxy-hex-3-ene? Question options:Question 2 4 / 4 points How many sigma-bonds are there in the following molecule: Question options: 14 6 12 8 10 Question 3 4 / 4 points The correct IUPAC name for the following molecule is:Question options: cis-5-ethyl-3,4-dimethylhex-2-ene trans-3,4,5-trimethylhept-2-ene (E)-3,4,5-trimethylhept-2-ene (Z)-3,4,5-trimethylhept-2-ene cis-3,4,5-trimethylhept-2-ene Question 4 4 / 4 points What is the proper electron-pushing mechanism for the acid-catalyzed hydration of an alkene? Question options:Question 5 4 / 4 points Pick out the carbocation which is most stable: Question options:Question 6 4 / 4 points Which of the following carbocations is likely to undergo rearrangement through a methyl shift? Question options: and andQuestion 7 4 / 4 points Determine the double bond stereochemistry for the following molecules: Question options: A: E; B: E A: Z; B: Z A: E; B: Z A: Z; B: E None of these choices. Question 8 4 / 4 points Markovnikov's rule for the addition of hydrogen halides to alkenes states that the incoming hydrogen bonds to the:Question options: sp2 carbon with the most hydrogens already. sp3 carbon with the most hydrogens already. sp2 carbon with the fewest hydrogens already. sp carbon with the most hydrogens already. None of these choices is correct. Question 9 0 / 4 points How many double bonds are there in the following molecule: Question options: 4 7 886 5 Question 10 0 / 4 points Which of the molecules below would be the expected product for hydrobromination (addition of HBr) of the following alkene: Question options: Question 11 4 / 4 points Which of the following molecules is 5-bromo-4-ethylhex-1-ene?Question options: Question 12 0 / 4 points Predict the major product for the following reaction: Question options:The reaction will not proceed. Question 13 0 / 4 points Which of the following represent the same compound: Question options: CH3CH2CH=CHCH2CH3 and CH3CH=CHCH2CH2CH3 None of these are the same compound. CH3CH2CH=CHCH2CH3 and CH3CH2CH2CH2CH=CH2 CH3CH2CH2CH2CH=CH2 and CH2=CHCH2CH2CH2CH3CH3CH2CH2CH2CH=CH2 and CH3CH=CHCH2CH2CH3 Question 14 4 / 4 points Which of the following compounds is expected to release the least amount of heat upon hydrogenation with one mole of H2? Question options: Question 15 4 / 4 pointsFor the following reaction, pick out the major product: Question options: Question 16 4 / 4 points Which one of the following can exhibit geometric isomerism? Question options: 2-hexene2,3-dimethyl-2-butene 2,3-dimethyl-1-butene 1-hexene 1-pentene Question 17 4 / 4 points The correct IUPAC name for the following compound is: Question options: 5-bromo-3-methylene-hexane 2-bromo-4-methylene-hexane 4-bromo-2-ethylpent-1-ene 2-bromo-4-ethylene-pent-4-ene 4-methylene-2-bromohexaneQuestion 18 0 / 4 points Which of the following products is (are) produced from the reaction below? Question options: and and Question 19 0 / 4 points Given the molecular formula of C4H6OCl2, The compound can contain:Question options: one double bond or one ring but not both. one double bond and one ring. two double bonds. two triple bonds. one double bond and one triple bond. Question 20 4 / 4 points Identify the orbitals involved with the C-C sigma-bonding framework in ethene: Question options: (2sp3, 2sp3) (2sp, 2sp) (2p, 2p) (2sp2, 2sp2)(2s, 1s) Question 21 4 / 4 points Pick out the molecules which can exist as (E)- and (Z)- isomers: Question options: CH3CH2CH2CH=CHCH2CH2CH3 CH3CH2CH2CH=CHCH2CH2CH3 and CH3CH2CH=CHCH2 CH2CH2CH3 CH3CH2CH2CH=CHCH2CH2CH3 and CH2=CHCH2 CH2CH2CH2CH2CH3 CH3CH2CH2CH2CH2CH2CH=CH2 and CH3CH2CH=CHCH2 CH2CH2CH3 CH3CH2CH2CH=CHCH2CH2CH3 and CH3CH2CH2CH2CH2CH2CH=CH2 Question 22 0 / 4 points Pick out the diene which has the highest heat of hydrogenation? Question options:Question 23 0 / 4 points What is the number of degrees of unsaturation in the following molecule: Question options: 6 4 57 8 Question 24 0 / 4 points Which of the following reactions has a radical intermediate? Question options: Both Neither Question 25 4 / 4 points Pick out the molecule which has a zero dipole moment: Question options: CH2Br2cis-HBrC=CFH fluoromethane NCl3 trans-HFC=CHFCHEM 233 Midterm Exam - Results Attempt 1 of 1 Written Apr 27, 2025 11:45 PM - Apr 28, 2025 1:24 AM Released May 2, 2025 11:55 PM Attempt Score 92.5 / 100 - 92.5 % Overall Grade (Highest Attempt) 92.5 / 100 - 92.5 % Question 1 2.5 / 2.5 points What is the total number of σ bonds found in the following compound? Question options: 11 8 10 22 15 Question 2 2.5 / 2.5 pointsWhat are the hybridization of carbons 1 and 2 respectively in cyclopentene? Question options: sp2 and sp3 None of the choices are correct. sp3 and sp sp2 and sp2 sp3 and sp2 Question 3 2.5 / 2.5 points What do fluorine atoms tend to do when they form chemical compounds with metals? Question options: they usually share electrons equally with metals. None of the answers are electrons fluorine atoms do not form compounds with other atoms. gain electrons Question 4 2.5 / 2.5 points The best Lewis structure for acetylene (C2H2) has: Question options: 2 single bonds, 1 double bond, and 2 lone pairs. 2 single bonds, 1 triple bond, and 1 lone pair. None of these choices are correct. 2 double bonds and 2 lone pairs. 2 single bonds, 1 triple bond, and no lone pairs. Question 5 2.5 / 2.5 points The molecular orbital diagram for the carbide anion (C22-) would have which of the following molecular orbital configurations? Question options:(σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4 (σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4(σ2p)2(π*2p)2 (σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4(σ2p)2(π*2p)4 (σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(π2p)4(σ2p)2 Question 6 2.5 / 2.5 points Identify the term for any species that can accept electrons. Question options: Lewis Acid Electronegativity Brønsted-Lowry Acid Brønsted-Lowry Base Lewis Base Question 7 2.5 / 2.5 pointsThe following shows a gray-scale image of an electrostatic potential map with the atoms labeled. Which of the numbered regions would appear reddest in a color image? Question options: 4 2, 3, and 4 would be the same shade of red. 2 3 1 Question 8 2.5 / 2.5 points Pick out the molecule which has a dipole moment (μ ≠ 0). Question options:Question 9 2.5 / 2.5 points What is the formal charge of sulfur atom B in timolol?Question options: +2 -1 +1 -2 0 Question 2.5 / 2.510 points Which of the following would represent the strongest acid? Question options: Ka = 2.5 x 10-1 Ka = 2.5 x 10-5 pKa = 4.60 pKa = 14.5 Question 11 0 / 2.5 points Which of the following is a constitutional isomer of 3-methylheptane? Question options:Question 12 2.5 / 2.5 points Pick out the types of molecules which can act as a hydrogen bond donor: Question options: carboxylic acids and alcohols all of them can act as hydrogen bond donors ethers and carboxylic acids carboxylic acids and tertiary aminestertiary amines and alcohols Question 13 2.5 / 2.5 points Which of these molecules has the lowest boiling point? Question options: Question 14 2.5 / 2.5 points Identify the more stable of the two pictured molecules: Question options:Question 15 2.5 / 2.5 points How many degrees of unsaturation does the following structure have (lone-pairs are not shown)? Question options: 4 5 73 6 Question 16 2.5 / 2.5 points Pick out the conformation for butane which has the gauche conformation. Question options: Question 17 0 / 2.5 pointsWhich of the following molecules have the highest heat of combustion per CH2? Question options: All have the same heat of combustion value. Question 18 2.5 / 2.5 points What is the IUPAC name for: Question options: 1-ethyl-2,3-dimethylcyclohexane1,6-dimethyl-5-ethylcyclohexane 1-ethyl-5,6-dimethylcyclohexane 2,3-dimethyl-1-ethylcyclohexane 1,2-dimethyl-3-ethylcyclohexane Question 19 2.5 / 2.5 points Which is the most stable conformation of cyclohexane? Question options: twist-boat half-chair boat staggered chair Question 20 2.5 / 2.5 points How many gauche/diaxial interactions are present in cis-1,2-dimethylcyclohexane?Question options: 2 gauche and 1 diaxial interactions 2 gauche and 2 diaxial interactions 1 gauche and 1 diaxial interactions 1 gauche and 2 diaxial interactions Question 21 2.5 / 2.5 points Identify the more stable of the two pictured molecules: Question options: They are of equal stability.Question 22 2.5 / 2.5 points In cyclopropane, which of the following strain types would be the least important in determining the overall energy? Question options: angle steric all make a significant contribution torsional Question 23 2.5 / 2.5 points Label the relationship between the pair of compounds below: Question options: Enantiomers IdenticalDiastereomers Constitutional Isomers Question 24 0 / 2.5 points Which of the following compounds is achiral? Question options: (2R,3R)-2,3-dichloropentane (2R,4S)-2,4-dichloropentane Two of these compounds are achiral. (2R,3S)-2,3-dichloropentane (2S,4R)-2,4-dichloropentane Question 25 2.5 / 2.5 points What can be said with certainty if a compound has [α]25D = -9.25? Question options: The compound has the (S) configuration.The compound has an optical purity of less than 100%. The compound is not meso. The compound has the (R) configuration. The compound possesses only one stereocenter. Question 26 2.5 / 2.5 points Name the enantiomeric pairs: Question options: , None of the choices. , and , ,, Question 27 2.5 / 2.5 points Hexane and 3-methylpentane are examples of: Question options: None of these choices. enantiomers diastereomers identical constitutional isomers Question 28 2.5 / 2.5 points For an (S)-enantiomer; which of the following statements is true? Question options: It is dextrorotatory (+)It is an equal mixture of (+) and (-) S indicates a small amount It is levorotatory (-) The mirror image is the R enantiomer Question 29 2.5 / 2.5 points Pick out the potential energy diagram for one-step exothermic reaction: Question options:Question 30 2.5 / 2.5 points Classify the overall reaction below as a(n): Question options: EliminationRearrangement Brønsted Acid-Base Substitution Addition Question 31 2.5 / 2.5 points Where is/are the transition state(s) found in a free energy diagram? Question options: at the lowest energy point(s) on the curve. with the product(s). In the valley(s) of the curve. with the intermediate(s). at the highest energy point(s) on the curve. Question 32 2.5 / 2.5 points Pick out the nucleophile(s) from the following molecules:BF3 NH3 (CH3)3C+ HCl Question options: HCl BF3 and (CH3)3C+ (CH3)3C+ and HCl NH3 BF3 and NH3 Question 33 2.5 / 2.5 points Which of the structures shown depicts the most stable carbocation intermediate formed in a hydrohalogenation reaction? Question options:Question 34 2.5 / 2.5 points Which of the following reactions which would be exothermic: Question options: Question 2.5 / 2.535 points Pick out the molecule which has a zero dipole moment: Question options: NCl3 CH2Br2 fluoromethane trans-HFC=CHF cis-HBrC=CFH Question 36 2.5 / 2.5 points For the following reaction, pick out the major product: Question options:Question 37 2.5 / 2.5 points Markovnikov's rule for the addition of hydrogen halides to alkenes states that the incoming hydrogen bonds to the: Question options: sp3 carbon with the most hydrogens already. sp carbon with the most hydrogens already. sp2 carbon with the most hydrogens already. sp2 carbon with the fewest hydrogens already. None of these choices is correct.Question 38 2.5 / 2.5 points How many sigma bonds are there in the following molecule? CH2=CH-CH2-CH=CH2 Question options: 4 12 6 14 9 Question 39 2.5 / 2.5 points Which of the following products is (are) produced from the reaction below? Question options:and and Question 40 2.5 / 2.5 points Which of the following reactions has a carbocation intermediate? Question options: NeitherBoth