phenolphthalein in a sentence
n.
📚 Grade Level: Grade 10, Grade 11, Grade 12
Definition
Phenolphthalein is a chemical compound used as a pH indicator that changes color in response to acidity or alkalinity, typically turning pink in basic solutions.
Sample Sentences
- Phenolphthalein is commonly used as an indicator in acid-base titrations.
- In the presence of a strong base, phenolphthalein changes color from colorless to pink.
- The laboratory technician carefully measured phenolphthalein for the experiment.
- Students often learn about phenolphthalein in their chemistry classes when studying pH indicators.
- Phenolphthalein is also used in certain medical tests to assess gastric acidity.