CHEM233/ CHEM 233 Midterm Exam | Answered Attempt Score 84 / 100 - 84 % | Updated 2025/26.

CHEM233/ CHEM 233 Midterm Exam | Answered Attempt Score 84 / 100 - 84 % | Updated 2025/26. Lesson 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 initiation