Question 1

Which of the following molecules has a polar covalent bond and a net dipole moment?

Accepted Answer

Chloromethane ($CH_3Cl$)

Question 2

Which of the following statements about resonance structures is correct?

Accepted Answer

The true structure of the molecule is a hybrid of all valid resonance structures.

Question 3

Which of the following acids is the strongest?

Accepted Answer

Hydrochloric acid ($HCl$)

Question 4

A molecule has two stereocenters. How many possible stereoisomers can it have, assuming no meso forms?

Accepted Answer

$4$

Question 5

Which of the following is the correct IUPAC name for the compound shown below?

$CH_3CH_2CH_2CH_2CH_3$

Accepted Answer

Pentane

Question 6

Which reagent would you use to convert an alkene to a vicinal diol?

Accepted Answer

Potassium permanganate ($KMnO_4$)

Question 7

Which of the following statements about SN2 reactions is true?

Accepted Answer

The reaction rate depends on both the substrate and nucleophile concentrations.

Question 8

Which of the following is the major product when 2-bromopentane undergoes E2 elimination with a strong base?

Accepted Answer

Trans-2-pentene

Question 9

Which of the following statements about the Markovnikov rule is correct?

Accepted Answer

The hydrogen atom adds to the carbon with the most hydrogens already attached.

Question 10

Which of the following compounds will show only one signal in its $^1H$ NMR spectrum?

Accepted Answer

Ethane ($C_2H_6$)

Question 11

Which of the following is a correct statement about the DEPT-135 $^{13}C$ NMR experiment?

Accepted Answer

It distinguishes between CH, CH$_2$, and CH$_3$ groups.

Question 12

Which of the following is the correct product of the reaction between 1-butene and $HBr$?

Accepted Answer

2-bromobutane

Question 13

Which of the following statements about free radical halogenation of alkanes is correct?

Accepted Answer

The reaction is initiated by light or heat.

Question 14

Which of the following is the correct structure for tert-butyl carbocation?

Accepted Answer

$(CH_3)_3C^+$

Question 15

Which of the following is the correct order of acidity for the following compounds?

$CH_3CH_2OH$, $C_6H_5OH$, $CH_3COOH$

Accepted Answer

$CH_3COOH > C_6H_5OH > CH_3CH_2OH$

Question 16

Which of the following statements about meso compounds is correct?

Accepted Answer

Meso compounds have chiral centers but are achiral overall.

Question 17

Which of the following is the correct product when 2-methyl-2-butene undergoes acid-catalyzed hydration?

Accepted Answer

2-methyl-2-butanol

Question 18

Which of the following is the correct formula for the number of possible stereoisomers for a molecule with $n$ stereocenters (assuming no meso forms)?

Accepted Answer

$2^n$

Question 19

Which of the following statements about the $E_2$ elimination mechanism is correct?

Accepted Answer

It requires a strong base and a good leaving group.

Question 20

Which of the following is the correct product when benzene reacts with bromine in the presence of $FeBr_3$?

Accepted Answer

Bromobenzene ($C_6H_5Br$)

Comprehensive Study Guide: Key Topics for Organic Chemistry Final Exam (CHM 31X)

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