For sure this is a very basic question but I would appreciate if someone could confirm it.
I have a dilution of methanol and glycerol and the point is increasing the viscosity by increasing the proportion of glycerol, all at room temperature.
I believe the molecular weight does not change but the free volume in between the solvent and my molecule (molecular rotor). I had the doubt if I could express the molecular weight as an average depending on the proportions used, what I think it is not useful for what I am doing.
Many thanks for your help.
Molecular mass or molecular weight refers to the mass of a MOLECULE. It is calculated as the sum of the mass of each constituent atom multiplied by the number of atoms of that element in the molecular formula. Methanol molecule remains methanol molecule in the mixture with glycerol. If a molecule changes in chemical reaction it becomes different molecule(s) with a different molecular weight
If there is no chemical reaction then the molecular weight of the solvent does not change in the mixture with glycerol.
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