A polar protic solvent like ethanol ($$\text{EtOH})$$

Question 1

Which of the following statements best describes the rate law for an SN2 reaction?

Accepted Answer

The rate depends on both the concentration of the substrate and the nucleophile: $$	ext{Rate} = k[	ext{substrate}][	ext{nucleophile}]$$

Question 2

Given the reaction: cyclohexyl bromide with water, what is the major product and the reaction type?

Accepted Answer

Cyclohexanol via SN1 mechanism.

Question 3

Which substrate would most likely undergo an E2 reaction when treated with a strong base like $$	ext{t-BuOK}$$?

Accepted Answer

A tertiary alkyl bromide.

Question 4

In the reaction of 2-bromo-2-methylcyclohexane with sodium ethoxide ($$	ext{NaOEt}$$), what is the major product and the mechanism?

Accepted Answer

2-methylcyclohexene via E2 mechanism.

Question 5

Which of the following is a very good nucleophile according to the provided table?

Accepted Answer

$$	ext{HS}^-$$

Question 6

What is the major product when 2-methylcyclohexanol is treated with $$	ext{H}_2	ext{SO}_4$$?

Accepted Answer

2-methylcyclohexene

Question 7

Which step is rate-limiting in the E1 dehydration of cyclopentanol with $$	ext{H}_3	ext{PO}_4$$?

Accepted Answer

Loss of water to form the carbocation.

Question 8

What is the mechanism for the reaction of 2-chloro-2-methylpropane with sodium hydroxide ($$	ext{NaOH}$$)?

Accepted Answer

SN1

Question 9

Which of the following solvents would favor an SN1 reaction?

Accepted Answer

A polar protic solvent like ethanol ($$	ext{EtOH})$$

Question 10

In the reaction of 1-chloro-2-(isopropoxy)propane with sodium hydroxide, what is the major product?

Accepted Answer

1-(isopropoxy)-2-propanol

Question 11

Which of the following statements about SN2 reactions is correct?

Accepted Answer

SN2 reactions occur in a single step with inversion of configuration.

Question 12

What is the major product when 2-methyl-2-bromocyclohexane reacts with sodium ethoxide ($$	ext{NaOEt}$$)?

Accepted Answer

2-methylcyclohexene

Question 13

Which nucleophile would be considered weak according to the provided table?

Accepted Answer

$$	ext{H}_2O$$

Question 14

What is the expected product when cyclopentanol is dehydrated with $$	ext{H}_3	ext{PO}_4$$?

Accepted Answer

Cyclopentene

Question 15

Which of the following is a fair nucleophile according to the table?

Accepted Answer

$$	ext{NH}_3$$

Question 16

In the reaction of 2-chloro-2-methylpropane with sodium ethoxide ($$	ext{NaOEt}$$), which mechanism is most likely?

Accepted Answer

E2

Question 17

Which of the following best describes the energy diagram for an E1 reaction?

Accepted Answer

It shows two transition states and a carbocation intermediate.

Question 18

What is the major product when tert-butyl bromide reacts with sodium cyanide ($$	ext{NaCN}$$)?

Accepted Answer

tert-butyl cyanide via SN1 mechanism.

Question 19

Which of the following is true about E2 reactions?

Accepted Answer

E2 reactions require a strong base and occur in a single step.

Guía paso a paso para reacciones de sustitución y eliminación en Química Orgánica I

Study Guide - Practice Questions