Molecular Weight
Molecular weight is a measure of the sum of the atomic weight values of the
atoms in a molecule, and is used in chemistry to determine stoichiometry in
chemical reactions and equations. Also, it’s defined as the average mass of a
molecule of a compound compared to 1/12 the mass of carbon 12.
Molecular weight is calculated experimentally by Light-Scattering Detector, which
is the most used method in calculating molecular weight.
Other methods used in calculating molecular weight experimentally are:
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Freezing Point Depression.
Cryoscopy Apparatus.
Cryoscopy Method.
Sample & Solvent Selection.
Molecular Weight of Polymers.
X-ray Scattering. (WAXS – SAXS)
Osmometer. (VPO ‘Vapor Pressure Osmometry’ – Membrane Osmometry)
Gel Permeation Chromatography. ‘GPC’
Light – Scattering Method
References
https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Physical_Methods
_in_Chemistry_and_Nano_Science_(Barron)/02%3A_Physical_and_Thermal_Anal
ysis/2.02%3A_Molecular_Weight_Determination