FINAL 01 - Volumetric Precipitimetry Flashcards
These are a class of reactions that deal with the formation of relatively insoluble substances
Volumetric precipitimetry
Used in official volumetric precipitation assays
Adsorption indicators
Used both in direct and residual titrations employing standard ammonium thiocyanate solution
Ferric alum
Used in the analysis of chloride (and other halides)
Potassium chromate
Is the product of the concentration of ions in a solution
Ksp
Method based on the cessation of precipitation
Gay-Lussac method
Type of titration - Gay-Lussac Method
Direct titration
Titrant - Gay-Lussac Method
Silver nitrate VS
Analyte - Gay-Lussac Method
Halides
Indicator - Gay-Lussac method
None
Endpoint - Gay-Lussac method
Cessation of precipitate
Species responsible for endpoint - Gay-Lussac Method
Silver halide
Method based on the formation of a second highly colored precipitate
Mohr method
Type of titration - Mohr method
Direct titration
Titrant - Mohr method
Silver nitrate VS
Analyte - Mohr method
Halides (except for iodide)
Indicator - Mohr method
Potassium chromate
Endpoint - Mohr method
Red precipitate
Species responsible for endpoint - Mohr method
Silver chromate
Required pH condition - Mohr method
pH 8
Method based on the formation of a soluble, colored complex
Volhard method
Type of titration - Volhard method (residual)
Residual titration