Question

What are indicators?







Please give me

Answer 1

Explanation:

A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH of the solution can be determined visually. Hence, a pH indicator is a chemical detector for hydronium ions or hydrogen ions in the Arrhenius model.

Answer 2

Answer:

Substances that are used to indicate whether a substance is acid or a base are known as indicators. They change their colour on addition of a solution containing an acidic or a basic substance.

Example: Naturally occurring indicators are turmeric, litmus, china rose and red cabbage.

synthetic indicator Examples are Phenolphthalein and Methyl Orange.