Question 1

Which of the following statements best explains why ethers generally have lower boiling points than alcohols of the same molecular formula?

Accepted Answer

Ethers cannot form hydrogen bonds with each other, while alcohols can.

Question 2

Which of the following compounds would be expected to have the most stable carbocation intermediate during a reaction?

Accepted Answer

A tertiary alkyl halide

Question 3

Which of the following best describes the Maillard reaction, a process relevant to food chemistry and carcinogen formation?

Accepted Answer

Reactions of proteins and sugars

Question 4

Which of the following is the best reagent to convert ethanol ($$\mathrm{CH_3CH_2OH}) to $$ethyl bromide ($$\mathrm{CH_3CH_2Br}$$)?

Accepted Answer

$$\mathrm{HBr}$$

Question 5

Which of the following statements about SN1 and SN2 reactions is correct?

Accepted Answer

SN1 reactions can lead to racemization at the stereocenter.

Question 6

Which of the following pairs of reagents would react faster by the SN2 mechanism?

Accepted Answer

A primary alkyl halide with a strong nucleophile

Question 7

Which of the following compounds is aromatic according to Hückel's rule?

Accepted Answer

Benzene

Question 8

Which of the following statements about carcinogens in food is TRUE?

Accepted Answer

Some carcinogens are created during cooking, such as by the Maillard reaction.

Question 9

Polyaromatic hydrocarbons can fit between DNA base pairs, a process known as:

Accepted Answer

Intercalation

Question 10

Which of the following best explains why alcohols are generally stronger acids than ethers?

Accepted Answer

Alcohols can stabilize the negative charge on the conjugate base through hydrogen bonding.

Question 11

Which of the following is the best substrate for an SN1 reaction?

Accepted Answer

Tert-butyl chloride

Question 12

Which of the following statements about resonance is correct?

Accepted Answer

Resonance increases the stability of a molecule by delocalizing electrons.

Question 13

Which of the following is the strongest base?

Accepted Answer

An alkoxide ion ($$\mathrm{RO^-})$$

Question 14

Which of the following statements about the SN2 reaction mechanism is correct?

Accepted Answer

The reaction occurs with inversion of configuration at the stereocenter.

Question 15

Which of the following is a likely product when a primary alcohol is treated with concentrated hydrobromic acid ($$\mathrm{HBr}$$)?

Accepted Answer

An alkyl bromide

Question 16

Which of the following statements about amines and alcohols as electrophiles in SN1 reactions is correct?

Accepted Answer

Alcohols are better electrophiles than amines in acidic solution.

Question 17

A molecule with the formula $$\mathrm{C_6H_6} is $$most likely:

Accepted Answer

An aromatic compound

Question 18

Which of the following best describes the modification of polyaromatic hydrocarbons by the body for safe excretion?

Accepted Answer

They are converted to more polar, water-soluble derivatives.

Question 19

Which of the following statements about electron delocalization is correct?

Accepted Answer

Electron delocalization can increase the stability of a molecule.

Question 20

Which of the following is a real-life example of a reaction that produces carcinogens during food preparation?

Accepted Answer

The Maillard reaction between amino acids and reducing sugars at high temperatures.

Organic Chemistry Midterm Study Guidance

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