Gravimetric Analysis
| Formula / Notation | Precipitate mass → moles → analyte mass; % = (m_analyte/m_sample) × 100 |
|---|---|
| Also Known As | Gravimetry, precipitation gravimetry, volatilisation gravimetry |
What is Gravimetric Analysis?
A quantitative analytical method that determines the amount of a substance by measuring mass. A component is separated from a sample (usually by precipitation) and weighed precisely. Gravimetric analysis is highly accurate and is used as a reference method in analytical chemistry.
Formula & Notation
Other Names / Synonyms: Gravimetry, precipitation gravimetry, volatilisation gravimetry
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A quantitative analytical method that determines the amount of a substance by measuring mass. A component is separated from a sample (usually by precipitation) and weighed precisely. Gravimetric analysis is highly accurate and is used as a reference method in analytical chemistry.
Gravimetric analysis is used for: sulfate determination (precipitated as BaSO₄), chloride determination (as AgCl), silicon (as SiO₂), water content (loss on drying), ash content of coal/organics, and as primary standardisation. It provides absolute (traceable) results without calibration standards.
Precipitation reagents in gravimetric analysis may be toxic (BaCl₂ for sulfate — barium is toxic; AgNO₃ for chloride — silver compounds stain skin). Hazardous vapours may be evolved during ignition of precipitates. Use appropriate PPE and conduct ignitions in a muffle furnace with proper ventilation…
The formula or notation for Gravimetric Analysis is: Precipitate mass → moles → analyte mass; % = (m_analyte/m_sample) × 100