Molar Mass Determination

Determination of molar masses via a measurement of the boi-ling point elevation (ebullioscopy)

Determination of molar masses via a measurement of the free-zing point depression (cryoscopy)

Alkenes: determination of molar mass and detection withBaeyer's reagent

Determination of the molar masses of metals

Principle

A piece of metal is weighed and placed in the insert of the reaction cylinder, whereafter an acid is added to the cylinder through the three-way valve until it is about half full. The metal is made to react with the acid by lowering the insert. The gas syringe c ...

Determination of the molecular mass of a liquid

Principle

The molar mass of a liquid is to be determined by evaporating a liquid at constant temperature and pressure, and measuring the volume of  vapour  formed using a calibrated gas syring.

Tasks

1. Determine the molar masses of diethy ...