It indicates that the solution's range is above or below of its transition value. For example the transition value of phenolphthalein is around 9.0.
Hence it shows a pink colour in basic solutions (pH>9) and colourless in acidic solutions.
Recreation of an indicator using an acid and a base involves mixing a colorless or faintly colored acid-base indicator with an acid to make the solution acidic (and change color) and then adding a base to neutralize the acid and return the indicator to its original color. This process demonstrates the reversible nature of acid-base indicators and how they can be used to visually indicate the presence of acids or bases in a solution.
The most appropriate indicator for a strong acid/strong base titration is phenolphthalein.
For the titration of a strong acid, the indicator typically used is phenolphthalein. Phenolphthalein changes color in the pH range of 8.2 to 10, which is suitable for titrating a strong acid with a strong base to determine the equivalence point.
An indicator used to detect an acid or base is a substance that changes color in the presence of acids or bases. Examples of indicators include litmus paper, phenolphthalein, and universal indicator solution.
An indicator is a substance that changes color when exposed to an acid or base.
An acid base indicator is a chemical substance that has the ability to change color depending on the pH.
This indicator changes his color.
Recreation of an indicator using an acid and a base involves mixing a colorless or faintly colored acid-base indicator with an acid to make the solution acidic (and change color) and then adding a base to neutralize the acid and return the indicator to its original color. This process demonstrates the reversible nature of acid-base indicators and how they can be used to visually indicate the presence of acids or bases in a solution.
common household indicators of acid base
it has (red acid) and a (blue base)
abbas
The most appropriate indicator for a strong acid/strong base titration is phenolphthalein.
It is a substance(chemical or natural) which changes colour in the presence of an acid or base.
it is an indicator.
indicator
For the titration of a strong acid, the indicator typically used is phenolphthalein. Phenolphthalein changes color in the pH range of 8.2 to 10, which is suitable for titrating a strong acid with a strong base to determine the equivalence point.
distinguish between common acid base indicator and universal indicator