Podcast
Questions and Answers
What is the significance of a smaller value of Ksp for a salt?
What is the significance of a smaller value of Ksp for a salt?
Which silver salt begins to precipitate first in the given sequence?
Which silver salt begins to precipitate first in the given sequence?
What is used as an indicator in the precipitation titration for Cl- and Br- ions?
What is used as an indicator in the precipitation titration for Cl- and Br- ions?
At what pH level does Mohr's method of precipitation titration need to be done?
At what pH level does Mohr's method of precipitation titration need to be done?
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What happens when the pH is greater than 9 in precipitation titration using AgNO3?
What happens when the pH is greater than 9 in precipitation titration using AgNO3?
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Study Notes
Solubility and Precipitation
- A smaller value of Ksp for a salt indicates that the salt is less soluble, meaning it is more likely to precipitate out of a solution.
- In a sequence of silver salts, the salt with the smallest Ksp value will begin to precipitate first.
Precipitation Titration
- Chrome Azurol S (CAS) is used as an indicator in the precipitation titration for Cl- and Br- ions.
- Mohr's method of precipitation titration requires a pH level of around 7.
Effects of pH on Precipitation Titration
- If the pH is greater than 9 in precipitation titration using AgNO3, the silver ions will react with hydroxide ions to form a silver oxide precipitate, interfering with the titration results.
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Description
Test your knowledge of solubility product constants with this quiz. Explore the precipitation titrations and learn about the detection of endpoints.
