Gravimetric Methods of Analysis

Flashcards based on key concepts and terms from Chapter 12 on Gravimetric Methods of Analysis.

Gravimetric Methods

Quantitative methods based on determining the mass of a pure compound related to the analyte.

Supersaturation

An unstable solution that contains a higher solute concentration than a saturated solution.

Tyndall Effect

The phenomenon where visible radiation is scattered by colloidal particles, making a beam of light visible in a colloidal suspension.

Coagulation

The process of individual colloidal particles sticking together to form larger, filterable masses.

Digestion

A process in which a precipitate is heated in the mother liquor to improve purity and filterability.

Coprecipitation

The process where normally soluble compounds are carried out of solution by a precipitate.

Nucleation

The process where a minimum number of atoms, ions, or molecules join to form a stable solid during precipitate formation.

Electrogravimetry

A method where an analyte is separated by deposition on an electrode using electrical current.

Volatilization Gravimetry

Gravimetric methods based on the conversion of the analyte to a gas of known composition for mass measurement.

Relative Supersaturation

The ratio that describes the concentration of solute at any instant compared to its equilibrium solubility.