Question

Why do you need indicators

Answer 1

we need indicator to know whether a substance is acidic basic or neutral


indicators are a type of dyes which change colour on reaction with a acid or base.

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