what is indicator? and what is universal indicator?
Answers
Answer:
A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. ... Wide-range pH test papers with distinct colours for each pH from 1 to 14 are also available.
something that gives information or shows something; a sign
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.
A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. ... Wide-range pH test papers with distinct colours for each pH from 1 to 14 are also available.