Natural Indicators and Colour Changes

What are Chemical Indicators?

Indicators are weak acids or weak bases that show a change in color as the concentration of Hydrogen ions in a solution changes or the pH of a solution changes. The indicators dissociate slightly in the water to form ions. Some examples of indicators are Litmus, Turmeric, Phenolphthalein, etc....

Types of Indicators

Indicators are mainly of two categorised into two categories,...

Natural Indicators

Natural Indicatora are indicator that are found in nature and can be used to detect whether a material is acidic or basic. Red cabbage, turmeric, grape juice, turnip peel, curry powder, cherries, beetroots, onion, tomato, and other are examples of natural indicatiors....

Natural Indicators and Colour Changes

There are various natural indicators that and the table shows the color change in the acidic and basic solution....

Artificial (or Synthetic) Indicators

Synthetic indicators, often known as artificial indicators, are acid-base indicators that are made from artificial form various chemicals. Following are some artificial or synthetic indicators discussed below,...

Olfactory Indicators

An olfactory indicator is a chemical that changes its scent depending on whether it’s combined with an acidic or basic solution. In the laboratory, olfactory indicators can be used to determine whether a solution is a basic or an acid, a technique known as olfactory titration. Simply defined, olfactory markers are compounds in acid and basic solutions that have distinct odours. For example, vanilla extract, onion and clove oil, and so on have distinct aromas. Olfactory indicators are very helpful to identify acids or bases for visually impaired students....

Colors of Indicators in Acidic and Basic Solution

The table added below shows the indicators and their colors in acidic and basic solution respectively....

Universal Indicators

The common indicators may or may not show colour change over a wide range of pH but only for a small range. This makes it difficult to identify a range of acids or bases. This problem is solved by universal indicators. Univeral Indicators is a indicator that is used to show color change in a wide range of Acid and Base. They are formed by mixing multiple indicators in a fixed proportion that change their colour over a wide range of pH values....

Importance of Chemical Indicators

Determining wether any substance is Acid or Base is very important for various purposes and Ckemical Indicator help us to identify the nature of the solution. The uses of Indicators are,...

Chemical Indicator – FAQs

1. What is Chemical Indicators Class 10?...