Study Notes
Carboxylic acids are organic compounds characterized by the presence of a –COOH functional group and are weak acids that partially ionize in water. They can react with metals, bases, and carbonates to form salts called ethanoates and are produced by the oxidation of ethanol. Esterification is a process where carboxylic acids react with alcohols to form esters, which are used in various applications.
- Carboxylic Acid — organic compound with a –COOH group Example: Ethanoic acid (CH3COOH)
- Esterification — reaction of a carboxylic acid with an alcohol to form an ester Example: Ethanoic acid reacting with ethanol to form ethyl ethanoate
- Ethanoic Acid — a carboxylic acid produced by the oxidation of ethanol Example: Vinegar is a dilute solution of ethanoic acid
- Ester — organic compound formed from carboxylic acid and alcohol Example: Ethyl ethanoate, used as a solvent
Exam Tips
Key Definitions to Remember
- Carboxylic Acid: Organic compound with a –COOH group
- Esterification: Reaction forming an ester from a carboxylic acid and alcohol
- Ethanoic Acid: Carboxylic acid produced by oxidizing ethanol
Common Confusions
- Carboxylic acids are not strong acids; they partially ionize in water
- Esterification is reversible and requires an acid catalyst
Typical Exam Questions
- What is the functional group of carboxylic acids? The functional group is –COOH.
- How is ethanoic acid produced from ethanol? By oxidation using atmospheric oxygen or an oxidizing agent like potassium dichromate.
- What is formed when a carboxylic acid reacts with an alcohol? An ester and water are formed.
What Examiners Usually Test
- Understanding of the reactions of carboxylic acids with metals, bases, and carbonates
- The process and conditions required for esterification
- The production of ethanoic acid from ethanol