Titration Endpoint
Mediumchemistry
At titration endpoint, indicator color change signifies:
Select the correct option:
Solution
Incorrect! Answer:
Approach to equivalence within indicator range
- Equivalence Point: The theoretical point where the moles of titrant exactly equal the moles of analyte according to the stoichiometry.
- Endpoint: The physical point where the indicator changes color.
- Practical Reality: Indicators have a specific pH range. We select an indicator such that its transition range brackets the expected pH of the equivalence point.
- Logic: The color change signals that the equivalence point has been reached or slightly exceeded. There is usually a very small difference between the theoretical equivalence point and the observed endpoint, known as titration error.
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About This Question
- Subject
- chemistry
- Chapter
- practical chemistry
- Topic
- titration endpoint
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Approach to equivalence within indicator range
- Equivalence Point: The theoretical point where the moles of titrant exactly equal the moles of analyte according to the stoichiometry.
- Endpoint: The physical point where the indicator changes color.
- Practical Reality: Indicators have a specific pH range. We select an indicator such that its transition range brackets the expected pH of the equivalence point.
- Logic: The color change signals that the equivalence point has been reached or slightly exceeded. There is usually a very small difference between the theoretical equivalence point and the observed endpoint, known as titration error.
This medium difficulty chemistry question is from the chapter practical chemistry, covering the topic of titration endpoint. It appeared in the 2025 exam.
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