Mada za sehemu hiiAcids, Bases, And SaltsMada 3
- Concept of Acids, and Bases
- Indicators
- Salts
Action on indicators
An indicator is a substance that changes color when it comes in contact with an acid or a base. Different indicators change color at different pH levels, and they help in identifying whether a solution is acidic, neutral, or basic.
Examples of indicators include:
- Litmus: Turns red in acidic solutions and blue in basic solutions.
- Methyl Orange: Turns red in acidic solutions and yellow in basic solutions.
- Phenolphthalein: Remains colorless in acidic solutions and turns pink in basic solutions.
Table of indicators
Below is a table showing the color change of various indicators in acidic and basic solutions:
| Indicator | Acidic Solution | Basic Solution |
|---|---|---|
| Litmus | Red | Blue |
| Methyl Orange (MO) | Red | Yellow |
| Phenolphthalein (POP) | Colorless | Pink |
| Bromide Blue | Yellow | Blue |
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