Question

ix). 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

indicators are special substances which have different colours in acidic and basic mediums, this they are used to test whether a substance is acidic or basic in nature