Which statement best describes the job of phenolphthalein in our titration?
Understand the Problem
The question is about identifying the correct function of phenolphthalein as an indicator in a titration experiment. It's a multiple-choice question where you need to know under what conditions phenolphthalein changes color to signal the endpoint of the titration.
Answer
Turns pink in the presence of base to signal the end of the titration
The job of phenolphthalein in titration is best described as turning pink in the presence of a base to signal the end of the titration.
Answer for screen readers
The job of phenolphthalein in titration is best described as turning pink in the presence of a base to signal the end of the titration.
More Information
Phenolphthalein is a chemical compound that is colorless in acidic solutions and turns pink in basic solutions. It is commonly used as an indicator in titrations to detect the endpoint.
Tips
A common mistake is to think phenolphthalein turns pink in acidic conditions, but it is actually colorless in acid and turns pink in basic conditions.
Sources
- Phenolphthalein - Wikipedia - en.wikipedia.org
- The phenolphthalein indicator in the Erlenmeyer flask helps ... - studocu.com
- Phenolphthalein - Structure, Properties, Uses of C20H14O4 - BYJU'S - byjus.com
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