Acids and Bases
Introduction
All About Acids
>
Definitions
Properties
Uses
The Basics
>
Definitions
Properties
Uses
Bases vs. Alkalis
pH Scale
Indicators
More Advanced Concepts
Conjugate Acids and Bases
Buffers
Strength and Concentration
Molarity
Calculating pH, pOH, [H+], [OH-]
Test Your Skills!
Neutralization Reactions
Making Salts
Titrations
Final Test
Glossary
Phenolphthalein
Phenolphthalein
is an organic compound often used as an indicator in
titrations
.
When phenolphthalein is dropped into an
acidic solution
, it will remain colorless.
When phenolphthalein is dropped into an
basic solution
, it will turn
pink
.
The beaker on the left that is pink is a base and the
beaker on the right that is clear is an acid
Click
here
to go back to all indicators