11.4 Everyday Uses of Carboxylic Acids

Introduction

Carboxylic acids are not just important in industry — they are also part of our everyday life. From the vinegar we use in cooking to the preservatives in our food, carboxylic acids are everywhere.

This section explains the everyday uses of carboxylic acids.

Definition

Everyday Uses of Carboxylic Acids: The common, daily-life applications of carboxylic acids.

In simple words: Carboxylic acids are used in many things we use every day.

Main Idea

The source lists the following everyday uses of carboxylic acids:

• Ethanoic acid solution (5%) is used as vinegar.
• Vinegar is used to make pickles, flavouring food, and dress salads.
• Lemon juice, which contains ascorbic acid, is used to reduce the smell of fish and flavouring food.
• Ascorbic acid is also used as vitamin-C.
• Benzoic acid and its salt sodium benzoate are used as preservatives in food and beverages to inhibit the growth of bacteria and fungi.

Core Concept

Key point: Carboxylic acids are used in everyday life as vinegar, flavouring agents, vitamin-C, and preservatives.

Detailed Explanation

1. Ethanoic Acid (5%) as Vinegar

What it is:

- Ethanoic acid solution (5%) is used as vinegar.

Key point: Ethanoic acid solution (5%) is vinegar.

2. Vinegar in Food

Uses:

• Vinegar is used to make pickles.
• It is used for flavouring food.
• It is used to dress salads.

Key point: Vinegar is used to make pickles, flavour food, and dress salads.

3. Lemon Juice (Ascorbic Acid)

What it is:

- Lemon juice contains ascorbic acid.

Uses:

• It is used to reduce the smell of fish.
• It is used for flavouring food.

Key point: Lemon juice (ascorbic acid) is used to reduce the smell of fish and flavour food.

4. Ascorbic Acid as Vitamin-C

What it is:

- Ascorbic acid is also used as vitamin-C.

Key point: Ascorbic acid is also known as vitamin-C.

5. Benzoic Acid and Sodium Benzoate as Preservatives

What they are:

- Benzoic acid and its salt sodium benzoate are used as preservatives in food and beverages.

What they do:

- They inhibit the growth of bacteria and fungi.

Key point: Benzoic acid and sodium benzoate are used as preservatives in food and beverages to inhibit the growth of bacteria and fungi.

Summary Table

Intermediate Level

Everyday uses of carboxylic acids:

Key point: Carboxylic acids are used in everyday life as vinegar, flavouring agents, vitamin-C, and preservatives.

Important Points

• - Ethanoic acid solution (5%) is used as vinegar.
• - Vinegar is used to make pickles, flavouring food, and dress salads.
• - Lemon juice contains ascorbic acid and is used to reduce the smell of fish and flavouring food.
• - Ascorbic acid is also used as vitamin-C.
• - Benzoic acid and its salt sodium benzoate are used as preservatives in food and beverages to inhibit the growth of bacteria and fungi.

Remember

• - Ethanoic acid (5%) = vinegar.
• - Vinegar → pickles, flavouring food, dress salads.
• - Lemon juice (ascorbic acid) → reduce smell of fish, flavouring food.
• - Ascorbic acid = vitamin-C.
• - Benzoic acid and sodium benzoate → preservatives.
• - Preservatives inhibit the growth of bacteria and fungi.

Common Mistakes

Quick Revision

Everyday Uses of Carboxylic Acids:

• Ethanoic acid solution (5%) is used as vinegar.
• Vinegar is used to make pickles, flavouring food, and dress salads.
• Lemon juice which contains ascorbic acid is used to reduce the smell of fish and flavouring food.
• Ascorbic acid is also used as vitamin-C.
• Benzoic acid and its salt sodium benzoate are used as preservatives in food and beverages to inhibit the growth of bacteria and fungi.

60-Second Revision

• Ethanoic acid (5%) = vinegar.
• Vinegar → pickles, flavouring food, dress salads.
• Lemon juice (ascorbic acid) → reduce smell of fish, flavouring food.
• Ascorbic acid = vitamin-C.
• Benzoic acid and sodium benzoate → preservatives.
• Preservatives inhibit the growth of bacteria and fungi.
• ⚠️ Warning: vinegar is a 5% solution of ethanoic acid, not pure ethanoic acid.