Carboxylic Acids
Overview
The sharp taste of vinegar comes from ethanoic acid, the best known member of the carboxylic acids. This family is marked by the -COOH functional group, and although these are weak acids, they show all the familiar acid reactions you already know.
In this lesson you will learn that carboxylic acids form a homologous series with the -COOH group, how ethanoic acid reacts with metals, bases and carbonates as a typical acid, and how it reacts with an alcohol to form a sweet-smelling ester.
Objectives
- Describe the reaction of ethanoic acid with: (a) metals (b) bases (c) carbonates including names and formulae of the salts produced.
- [Supplement] Describe the formation of ethanoic acid by the oxidation of ethanol: (a) w ith acidified aqueous potassium manganate(VII) (b) b y bacterial oxidation during vinegar production.
- [Supplement] Describe the reaction of a carboxylic acid with an alcohol using an acid catalyst to form an ester.
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Carboxylic Acids. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- The functional group of the carboxylic acids is: A. -OH B. -COOH C. C=C D. -Cl Answer: B
- Ethanoic acid is classed as a: A. Strong acid B. Weak acid C. Base D. Neutral substance Answer: B
- Ethanoic acid reacts with magnesium to give hydrogen and: A. An ester B. A magnesium ethanoate salt C. Carbon dioxide D. An alcohol Answer: B
- Ethanoic acid reacts with sodium carbonate to give a salt, water and: A. Hydrogen B. Oxygen C. Carbon dioxide D. An ester Answer: C
- A carboxylic acid reacts with an alcohol to form water and a(n): A. Salt B. Ester C. Alkane D. Carbonate Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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