Question 1

Animal fats and vegetable oils are composed of triacylglycerols.

Accepted Answer

Both animal fats and vegetable oils are composed of triacylglycerols, which are esters derived from glycerol and three fatty acid groups.

Question 2

The ester below contains a propoxy group.

Accepted Answer

The answer of The ester below contains a propoxy group....

Question 3

Treatment of an amide (RCONHR')with water in the presence of an acid catalyst (HCl)forms a carboxylic acid with the structure R'COOH,and an amine salt with the structure RNH₃⁺ Cl^-.

Accepted Answer

The treatment of an amide (RCONHR') with water in the presence of an acid catalyst (HCl) forms a carboxylic acid with the structure RCOOH, and an ammonium salt with the structure R'NH3+ Cl-.

Question 4

2-ethylheptanamide is an alternative name for N-ethylheptanamide.

Accepted Answer

2-ethylheptanamide and N-ethylheptanamide are different compounds; the former has an ethyl group on the second carbon of the heptanamide chain, while the latter has an ethyl group attached to the nitrogen atom.

Question 5

The compound below is a 1° amide.

Accepted Answer

The answer of The compound below is a 1° amide....

Question 6

A lactam can be a primary amide.

Accepted Answer

A lactam is a cyclic amide, not a primary amide. Primary amides have the formula RCONH2, where the amide nitrogen is bonded to one carbon atom (the carbonyl carbon) and two hydrogen atoms, whereas lactams are cyclic structures formed from the intramolecular reaction of an amino group and a carboxylic acid group within the same molecule, resulting in a ring structure that does not have the amide nitrogen bonded to two hydrogen atoms.

Question 7

The two compounds below have approximately the same boiling point.

Accepted Answer

The answer of The two compounds below have approximately the...

Question 8

The first step in the metabolism of a triacylglycerol is hydrolysis of the ester bonds to form glycerol and three fatty acids in a reaction called a simple ester hydrolysis. In the cells of the body,this reaction is catalyzed by acids.

Accepted Answer

In the cells of the body, the hydrolysis of the ester bonds in triacylglycerols to form glycerol and three fatty acids is catalyzed by enzymes known as lipases, not by acids.

Question 9

Penicillin acts as an antibiotic by reacting with an enzyme needed to synthesize the cell nucleus of a bacterium.

Accepted Answer

Penicillin acts by inhibiting the synthesis of the bacterial cell wall, not the cell nucleus. Bacteria do not have a nucleus.

Question 10

The compound below is an example of a lactam.

Accepted Answer

The answer of The compound below is an example of...

Question 11

Triacylglycerols are esters formed from glycerol and three acids,each of which has a long carbon chain bonded to the carbonyl group.

Accepted Answer

Triacylglycerols, also known as triglycerides, are indeed esters formed from one glycerol molecule and three fatty acids, each fatty acid chain being long and bonded to the glycerol backbone via an ester linkage to the carbonyl group of the fatty acid.

Question 12

A condensation polymer is a polymer formed when monomers containing two functional groups come together with the gain of a small molecule such as water.

Accepted Answer

A condensation polymer is formed when monomers with two functional groups join together with the loss of a small molecule, such as water.

Question 13

Nylon is an example of a condensation polymer.

Accepted Answer

Nylon is formed through a condensation polymerization process where monomers are joined together by the elimination of small molecules such as water, resulting in the formation of amide bonds between monomers, characteristic of nylons.

Question 14

The compound below has the molecular formula C₉H₁₁NO,contains a benzene ring,and is a 2° amide.

Accepted Answer

The answer of The compound below has the molecular formula...

Question 15

When the compound below reacts with water in the presence of HCl,ethanol and acetic acid are formed.

Accepted Answer

The answer of When the compound below reacts with water...

Question 16

Polyesters are condensation polymers.

Accepted Answer

Polyesters are formed through a condensation polymerization process, where monomers react to form a polymer and a small molecule, such as water, is released.

Question 17

The ester below contains a butoxy group.

Accepted Answer

The answer of The ester below contains a butoxy group....

Question 18

All natural and synthetic fibers are polymers.

Accepted Answer

Both natural fibers (like cotton, wool, and silk) and synthetic fibers (like nylon, polyester, and acrylic) are composed of long chains of molecules known as polymers, which give them their strength and flexibility.

Question 19

The two compounds below have approximately the same boiling point.

Accepted Answer

The answer of The two compounds below have approximately the...

Question 20

Fischer esterification can be used to synthesize aspirin from salicylic acid.

Accepted Answer

Fischer esterification is a process that involves the reaction of an acid with an alcohol in the presence of an acid catalyst to form an ester. In the synthesis of aspirin, salicylic acid reacts with acetic anhydride (a derivative of acetic acid) to form acetylsalicylic acid, which is aspirin, and this process is a specific application of Fischer esterification principles.

Quiz 17: Carboxylic Acids,esters,and Amides

Animal fats and vegetable oils are composed of triacylglycerols.

The ester below contains a propoxy group.

Treatment of an amide (RCONHR')with water in the presence of an acid catalyst (HCl)forms a carboxylic acid with the structure R'COOH,and an amine salt with the structure RNH3+ Cl-.

2-ethylheptanamide is an alternative name for N-ethylheptanamide.

The compound below is a 1° amide.

A lactam can be a primary amide.

The two compounds below have approximately the same boiling point.

The first step in the metabolism of a triacylglycerol is hydrolysis of the ester bonds to form glycerol and three fatty acids in a reaction called a simple ester hydrolysis. In the cells of the body,this reaction is catalyzed by acids.

Penicillin acts as an antibiotic by reacting with an enzyme needed to synthesize the cell nucleus of a bacterium.

The compound below is an example of a lactam.

Triacylglycerols are esters formed from glycerol and three acids,each of which has a long carbon chain bonded to the carbonyl group.

A condensation polymer is a polymer formed when monomers containing two functional groups come together with the gain of a small molecule such as water.

Nylon is an example of a condensation polymer.

The compound below has the molecular formula C9H11NO,contains a benzene ring,and is a 2° amide.

When the compound below reacts with water in the presence of HCl,ethanol and acetic acid are formed.

Polyesters are condensation polymers.

The ester below contains a butoxy group.

All natural and synthetic fibers are polymers.

The two compounds below have approximately the same boiling point.

Fischer esterification can be used to synthesize aspirin from salicylic acid.

Treatment of an amide (RCONHR')with water in the presence of an acid catalyst (HCl)forms a carboxylic acid with the structure R'COOH,and an amine salt with the structure RNH₃⁺ Cl^-.

The compound below has the molecular formula C₉H₁₁NO,contains a benzene ring,and is a 2° amide.