Question

What are indicators, name three
common indicators

Answer 1

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• INDICATORS:

A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually. Hence, a pH indicator is a chemical detector for hydronium ions (H3O+) or hydrogen ions (H+) in the Arrhenius model. Normally, the indicator causes the color of the solution to change depending on the pH.

• The three most common indicators are: Litmus, Methyl orange and Phenolphthalein.

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Answer 2

Indicators are weak inorganic compounds which change color in accordance with the pH of the solution.

The three most common indicators are: Litmus, Methyl orange and Phenolphthalein