CHEM 233 Lesson 2 Quiz - Results; Attempt Score 92 / 100 - 92 % | Latest Updated 2025/26.

CHEM 233 Lesson 2 Quiz - Results; Attempt Score 92 / 100 - 92 % | Latest Updated 2025/26. Lesson 2 Quiz - Results 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 interactions