Question

What are indicators ?​

Answer 1

Answer:

An indicator is a substance that changes its colour in acidic and basic medium.An indicator shows one colour in acidic medium and different colour in basic medium so that they are called indicators.

Explanation:

there are two types of indicators those are natural and artificial indicators

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borahae.

Answer 2

• A pH indicator is a halochromic chemical that may be added to a solution in very small amounts to visually measure the pH. (acidity or basicity).
• As a result, under the Arrhenius model, a pH indicator is a chemical detector for hydrogen ions (H+) or hydronium ions (H3O+).
• The indicator changes the colour of the solution based on the pH in most cases.
• Other physical attributes can be changed by indicators; olfactory indicators, for example, can vary their odour.
• A neutral solution with a pH of 7.0 at 25°C is considered neutral (standard laboratory conditions).
• Acidic solutions have a pH of less than 7.0, whereas basic solutions have a pH of greater than 7.0. (alkaline).
• pH indicators are widely used in biology and analytical chemistry since most naturally occurring organic substances are weak protolytes, carboxylic acids, and amines.