Topic 7 - 7.2 - Carboxylic Acids

Question 1

• What is the name of the functional group that identifies carboxylic acids?
• Are carboxylic acids weak or strong? Explain your answer

Answer 1

• Carboxyl (-COOH)
• Weak, because they only partially dissociate in water, producing a low concentration of H+ ions.

Question 2

What name do carboxylic acids also go by?

Answer 2

Alkanoic acids

Question 3

What can be observed as the number of carbon atoms in a alkanoic acid is increased?

Answer 3

Melting and boiling point increase, miscibility decreases

Question 4

List the four miscible carboxylic acids

Answer 4

• Methanoic
• Ethanoic
• Propanoic
• Butanoic

Question 5

List four uses of alkanoic acids

Answer 5

• Food preservation
• Cleaning
• Making medicines
• Making soaps

Question 6

Carboxyl group general formual?

Answer 6

CnH2n+1COOH

Question 7

List the first 8 alkanoic acids

Answer 7

• Methanoic acid
• Ethanoic acid
• Propanoic acid
• Butanoic acid
• Pentanoic acid
• Hexanoic acid
• Heptanoic acid
• Octanoic acid