Question

what are indicators give two examples and write its effect on acid base and water​

Answer 1

Answer:

$\huge\purple{\boxed{{{Hey \: Mate..!!!}}}}$

What are 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. Indicators can also show change in other physical properties.
• For example, olfactory indicators show change in their odor.
• The pH value of a neutral solution is 7.0 at 25°C (standard laboratory conditions).

Examples :-

1. Litmus
2. Red cabbage
3. Turmeric
4. China Rose petals

✒ Effect of Indicators on Acid :-

• They are usually weak acids or bases, which when dissolved in water dissociate slightly and form ions.
• Consider an indicator which is a weak acid, with the formula HIn

✒ Effect of Indicators on Base :-

• If the indicator is a weak base, the base, and its conjugate acid display different colors.

✒ Effect of Indicators on Water :-

• pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
• Water that has more free hydrogen ions is acidic, whereas water that has more free hydroxyl ions is basic.
• Since pH can be affected by chemicals in the water, pH is an important indicator of water that is changing chemically.

$\red{\boxed{\boxed{\boxed{5 \: Thanks +Follow =Inbox}}}}$