Question

What are indicators?​

Answer 1

Answer:

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

An indicator is a substance that changes color in acidic and basic medium.

• We cannot identify everything by tasting it therefore special types of substances are used to test whether a substance is acidic or basic. These substances are called indicators .
• There are two types of indicators , natural indicators and synthetic indicators .

Commonly used natural indicators - litmus as indicator , turmeric as indicator , China rose as an indicator and beetroot and purple cabbage as indicators .

Commonly used synthetic indicators - phenolphthalein and methyl orange .

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