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Questions and Answers

What is the type of amide shown in the structure CH3—C—NH2?

Primary (1°) amide (correct)

Quaternary amide

Secondary (2°) amide

Tertiary (3°) amide

What type of bonding occurs between molecules of primary amides?

Covalent bonding

Hydrogen bonding (correct)

Electrostatic bonding

Ionic bonding

What is the functional group present in amides?

—C—N— (correct)

—OH

—COOH

—NH2

What is the type of amide shown in the structure CH3—C—N—CH3?

Tertiary (3°) amide Signup and view all the answers

What is the main difference between a primary amide and a secondary amide?

The number of alkyl or aryl groups attached to the nitrogen atom Signup and view all the answers

What is the general formula for a primary amide?

RCONH2 Signup and view all the answers

What is the primary function of reading the course guide prior to class?

To prepare for class discussions and participation Signup and view all the answers

What is the general formula for amines?

NH2 Signup and view all the answers

How are amines classified?

As primary, secondary, and tertiary based on the molecular structure Signup and view all the answers

What is the IUPAC rule for naming amines?

The alkane name is changed to amine and the chain is numbered to locate the amine group Signup and view all the answers

What is a tertiary amine?

An amine with three carbon groups bonded to the nitrogen atom Signup and view all the answers

What is the purpose of watching videos related to the topic?

To prepare for class discussions and participation Signup and view all the answers

What is the main reason for the solubility of amines in water?

The polar N-H bond in amines forms hydrogen bonds with the polar O-H bond in water Signup and view all the answers

What is a primary amine?

An amine with one carbon group bonded to the nitrogen atom Signup and view all the answers

What is a characteristic of amines with respect to their boiling points?

Amines have higher boiling points than alkanes Signup and view all the answers

What is the purpose of reading course outcomes?

To understand the expectations of the course Signup and view all the answers

Which of the following statements is TRUE about the hydrogen bonding of amines?

Hydrogen bonding occurs only in 1° and 2° amines Signup and view all the answers

What is the reactant that amines attract to form a conjugate acid?

H+ Signup and view all the answers

Which of the following compounds is NOT soluble in water?

CH3—CH2—CH2—CH3 Signup and view all the answers

What is the type of bond that the N atom in amines forms with water?

Hydrogen bond Signup and view all the answers

Which of the following is a characteristic of 1° and 2° amines?

They undergo hydrogen bonding Signup and view all the answers

What is the functional group present in amines?

-NH2 Signup and view all the answers

What is the result of neutralizing an amine with acid?

Formation of an amine salt Signup and view all the answers

What is the name of the compound formed when methylamine reacts with water?

Methylammonium hydroxide Signup and view all the answers

What is the general formula for naming an amine salt?

Replacing the amine part of the name with ammonium followed by the name of the negative ion Signup and view all the answers

What functional group is replaced in carboxylic acids to form amides?

Hydroxyl group (-OH) Signup and view all the answers

How are amides classified?

According to the number of carbon atoms bonded to the nitrogen atom Signup and view all the answers

What is the product of the reaction between ethylamine and water?

Ethylammonium hydroxide Signup and view all the answers

What is the role of an acid in the formation of an amine salt?

It acts as an acid to neutralize the amine Signup and view all the answers

What is the name of the compound formed when methylamine reacts with HCl?

Methylammonium chloride Signup and view all the answers

What is the functional group shown in the diagram?

Amide Signup and view all the answers

What is the process of breaking an amide bond into a carboxylic acid and an amine or ammonia?

Hydrolysis Signup and view all the answers

What is the bond that is broken during the hydrolysis of an amide?

Amide bond Signup and view all the answers

What is the product of the hydrolysis of an amide?

Carboxylic acid and amine Signup and view all the answers

What is the purpose of the references provided?

To provide additional information on the topic Signup and view all the answers

What is the last message in the discussion?

Prepare for an online quiz Signup and view all the answers

Study Notes

Checklist for Class

Read course outcomes
Read course guide prior to class
Proactively participate in discussions
Watch videos related to the topic
Answer and submit course unit tasks

Amines

Are derivatives of ammonia (NH3)
Contain nitrogen (N) attached to one or more alkyl or aromatic groups
Classified as primary (1°), secondary (2°), or tertiary (3°) based on the number of carbon groups bonded to the nitrogen atom
IUPAC names are based on the longest chain and the amine group is indicated by changing the -e in the alkane name to -amine

Physical Properties of Amines

Boiling points are higher than alkanes but lower than alcohols of similar mass
Hydrogen bonding occurs in 1° and 2° amines, but not 3°
Soluble in water if they have 1-5 carbon atoms due to hydrogen bonding with the polar O-H bond in water

Chemical Properties of Amines

React as bases, attracting a H+ from H2O to the N atom
Weak bases in water
Neutralization forms amine salts, named by replacing the amine part of the name with ammonium followed by the name of the negative ion

Amides

Formed when an amino group (-NH2) replaces the -OH group of carboxylic acids
Classified as primary (1°), secondary (2°), or tertiary (3°) based on the number of carbon atoms bonded to the nitrogen atom
Hydrogen bonding occurs between primary amides

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