Gravimetric analysis

Gravimetric analysis

A technique used to determine the mass of an element or compound in a substance

Accurate electronic balance

Used in gravimetric analysis and includes the tare function

Weighing boat

A container used for holding substances during weighing

Weighing by difference

A method of measuring mass by subtracting the mass of the container

Weighing accurately approximately

A term referring to the process of measuring a mass close to a target value with high precision

Heating to constant mass

A technique involving repeated heating

Cooling in a desiccator

Prevents absorption of water from the air during gravimetric analysis

Purpose of gravimetric analysis

To determine the mass of a specific element or compound in a sample

Conversion in gravimetric analysis

The substance is converted into another of known chemical composition for isolation and purification

Conversion by precipitation

A precipitation reaction forms a precipitate that is isolated

Filtrate testing

Ensures the precipitation reaction has gone to completion

Conversion by volatilisation

Heating a substance to evaporate volatile products (often water)