Indicator
Indicators are chemical compounds which help to indicate the presence of acid or base in a chemical reaction. They possess different colours in acidic solutions and different colours in basic solutions. Indicators are made naturally by plants and animals or artificially by humans. The image shows a litmus test of acids and bases.
An indicator indicating the pH
- The range of 0 to 7 indicates an acidic solution.
- The range of 7 to 14 indicates the basic solution.
- 7 is a neutral solution.
Types of Indicators
There are various types of indicators used for various purposes some of which are,
- Natural Indicators: Indicators derived from plants, animals or any living organism are natural indicators. Examples, Red Cabbage, Litmus paper and others.
- Synthetic Indicators: Indicators made artificially in laboratories and factories are synthetic indicators. Examples, are Phenopthelien, Methyl orange, and others.
- Olfactory Indicators: Substances that have different smells in acidic or basic mediums are called Olfactory Indicators. Example onions, olives and others.
Acids, Bases and Salts
Acids, Bases, and Salts are the main chemical compounds that exist in our surroundings. Acids, Bases, and Salts are compounds that occur naturally and can also be created artificially. They are found in various substances including our food. Vinegar or acetic acid is used as a food preservative. Citrus fruits have citric acid and etc.
Other than food they also have a wide variety of uses such as in various industries, manufacturing plants, processing plants, laboratories, and others. In this article, we will learn about Acids, Bases, and Salts, their properties, types, uses, and others in detail. The image given below shows acid and base which when reacting form salt.
Table of Content
- What are Acids?
- Types of Acids
- Uses of Acids
- What are Bases?
- Types of Bases
- Uses of Bases
- Indicator
- What are Salts?
- Types of Salts