Carboxylic Acids

Question 1

What are the names of the first 4 Carboxylic Acids.

Answer 1

1. Methanoic Acid
2. Ethanoic Acid
3. Propanoic Acid
4. Butanoic Acid

Question 2

What are the 2 types of Acids

Answer 2

1. Mineral Acids

2. Carboxylic Acids.

Question 3

What is a functional group

Answer 3

This is an atom or a group of atoms that determine the chemical properties of a compound.

Question 4

What is a Homologous Series

Answer 4

This is a series of compounds that are arranged according to molecular mass and have the same:

1. Functional Group
2. General Formula
3. Similar chemical properties
4. Gradation of physical properties
5. Differ from each adjacent molecule by a -CH2-

Question 5

What are the physical properties of Carboxylic acids

Answer 5

The physical properties of carboxylic acids are:
1. They dissolve in water because they form Hydrogen bonds with water.

2. The melting and boiling point increases as the molecules get bigger in the homologous series.

Question 6

What are the chemical properties of Carboxylic Acids

Answer 6

The chemical properties of carboxylic acids are:
1. They release H+ ions in aqueous solutions.

2. They react with bases to form a salt and water.
3. They react with reactive metals to form a salt and hydrogen.
4. They react with metal carbonates to form a salt, carbon dioxide, and water.

Question 7

What are some carboxylic acids that we use in day-to-day life

Answer 7

1. Ethanoic Acid => vinegar
2. Citric Acid => Lime
3. Lactic Acid => Milk and formed in muscles.
4. Methanoic Acid => Ants.

Question 8

What are esters

Answer 8

These are compounds that have a distinct smell, usually found in fruits, etc.

Question 9

What is esterification

Answer 9

This is when an alcohol reacts with a carboxylic acid to form an ester and water.