Scribd
Upload
48 views1 page

Questions3 271015 PDF

Gel permeation chromatography separates polymers by size and can determine molar mass and molecular weight distribution. Osmometry measures the lowering of vapor pressure of a solvent by a solute and determines number-average molar mass. Light scattering determines weight-average molar mass by scattering contrast from differences in electron density, neutron scattering or X-ray scattering.

Uploaded by

Ali Hassan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
48 views1 page

Questions3 271015 PDF

Gel permeation chromatography separates polymers by size and can determine molar mass and molecular weight distribution. Osmometry measures the lowering of vapor pressure of a solvent by a solute and determines number-average molar mass. Light scattering determines weight-average molar mass by scattering contrast from differences in electron density, neutron scattering or X-ray scattering.

Uploaded by

Ali Hassan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 1

Questions on Lecture 3 from 27 October 2015

1. What is the free energy of an ideal chain?

2. How does gel permeation chromatography work


and which quantities can be determined?

3. How does osmometry work?


Which average molar mass is determined?

4. Sketch a light scattering setup and


give a typical plot to determine Mw!

5. Which quantities are at the origin of


the scattering contrast in light/X-ray
and neutron scattering?
1

You might also like