ebullioscopy
Definition
Ebullioscopy (noun):
A chemical technique that measures the boiling point elevation of a liquid to determine the molecular weight of a dissolved substance. It is based on the principle that adding a non-volatile solute to a solvent raises its boiling point in proportion to the solute's concentration.
Usage Examples
- (The technique measured boiling point changes to find the molecular weight.)
- (The method works best for non-electrolytes.)
Advanced Usage
"Ebullioscopic constant": A property of a solvent that quantifies how much its boiling point rises per mole of solute per kilogram of solvent.
- Water has an ebullioscopic constant of 0.512 °C·kg/mol. (This constant is used in calculations for ebullioscopy.)
"Ebullioscopic method": Another term for the technique itself, emphasizing its procedural aspects.
- The ebullioscopic method requires precise temperature measurements. (Accuracy is critical for reliable results.)
Variants and Related Words
Ebullioscopic (adjective): Relating to or used in ebullioscopy.
- The ebullioscopic measurement gave consistent results. (The measurement based on boiling point elevation was reliable.)
Ebulliometer (noun): An instrument used to perform ebullioscopy.
- The ebulliometer was calibrated before the experiment. (The device measures boiling points precisely.)
Synonyms
- Boiling point elevation method: A descriptive term for the same technique.
- Cryoscopy (related but opposite): A similar method using freezing point depression instead of boiling point elevation.
Related Idioms (None directly applicable, but a related phrase is provided)
- "Raise the boiling point": A phrase used metaphorically to mean increasing tension or intensity, but in chemistry it is literal.
- Adding salt to water raises its boiling point, a principle exploited in ebullioscopy. (The solute causes a measurable physical change.)