Contextualization

Carboxylic acids are a category of organic compounds that contain a carboxyl group, a functional group composed of a carbonyl (a carbon with a double bond to an oxygen) and a hydroxyl (an oxygen with a single bond to a hydrogen). This composition makes carboxylic acid one of the most reactive groups in organic chemistry.

Carboxylic acids are abundant and critical for life on Earth. For example, acetic acid, perhaps the most well-known of these acids, is the main component of vinegar, while citric acid is found in citrus fruits such as lemon and orange. The presence of carboxylic acids in amino acids, the building blocks of proteins, illustrates their importance in biochemistry and life as we know it.

To deeply understand what carboxylic acids are, their properties, and characteristics, it is essential to study and discuss the subject in an academic context. In this regard, Organic Chemistry, as the science that studies carbon compounds and their reactions, is the perfect field to explore this topic.

The relevance of carboxylic acids in our daily lives is undeniable. They are found in cleaning products, food, medicines, and even in our bodies. The ability to understand the properties of these acids and the ways they interact with other substances is essential to enhance their application in various areas, from the food industry to medicine.

Practical Activity

Activity Title: "The Chemistry of Carboxylic Acids: Where Do They Come From and Where Do They Go"

Project Objective

The objective of this activity is to investigate the production, use, degradation, and disposal of products containing carboxylic acids, such as acetic acid and citric acid. Additionally, this activity aims to chemically understand and explain the properties of carboxylic acids that allow for these practical applications. Groups will be encouraged to be creative and explore different methods of analysis and presentation of their results.

Detailed Project Description

Each group must select a common product containing carboxylic acids - such as vinegar, lemon, medications, etc. - and conduct a detailed research on the life cycle of this product from a chemical perspective.

Groups should address the following topics:

1. Product production: How are carboxylic acids obtained or synthesized?
2. Product use: How do the chemical properties of carboxylic acid influence the product's functionality?
3. Product degradation: How do carboxylic acids break down? What are the degradation reactions of the substance in the environment?
4. Product disposal: How is the product usually disposed of? Are there disposal methods that minimize environmental impact?

Required Materials

• Internet access for research
• Books and other related publications
• Selected product for study
• Personal protective equipment (PPE) if necessary for product handling
• Materials for presenting results (presentation software, cardboard, etc.)

Detailed Step-by-Step for Activity Execution

1. Form groups of 3 to 5 students.
2. Select a product containing carboxylic acids for research.
3. Conduct a detailed research on the life cycle of the selected product, from production to disposal, focusing on the chemical reactions involved.
4. Record all sources of information used for later reference in the Bibliography section.
5. Develop a detailed presentation of the product's life cycle, including the chemical reactions involved and the environmental impact of these reactions.
6. Present the results to the class.

Project Deliverables and Document Writing

After completing the research and presentation, each group must write a detailed document about the project. The document should be divided into the following sections:

• Introduction: Describe the selected product, the relevance of carboxylic acids in its composition and functionality, and the project's objective.
• Development: Detail the research conducted: how is the carboxylic acid obtained? How does it affect the product's functionality? How does it react and degrade in the environment? How is the product disposed of and what are the environmental impacts of this disposal? Include all relevant chemical reactions and theoretical concepts identified during the research.
• Conclusions: Discuss the main findings of the project, the lessons learned, and propose individual and/or collective solutions to improve the responsible use and disposal of the product.
• Bibliography: List all sources of information consulted during the project.

The project should be presented in digital or printed format, as directed by the teacher.

Remember, the key to a good project is effective group collaboration, so establish a work schedule and organize yourselves so that everyone actively participates in the research and preparation of the final document.