Question:
In a polymer sample, 30% of molecules have a molecular mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer ?
In a polymer sample, 30% of molecules have a molecular mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer ?
Updated On: Jul 6, 2022
- 40300
- 30600
- 43333
- 50400
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
$\bar{M}_w = \frac{30(20000)^2 + 40 (30000)^2 + 30(60000)^2}{30 \times 2000) + (40 + 30000)+(30 \times 60000)} = 43.333$
Was this answer helpful?
0
0
Top Questions on Polymers
- The catalyst used in the preparation of high density polythene is
- Arrange the following polymers in increasing order of intermolecular forces:
- Neoprene is the polymer of a monomer X. IUPAC name of X is
- Mention the types of polymers formed on the basis of intermolecular forces. Write any two uses of low density polyethylene.
- The fibre which does NOT contain 1,4-glycosidic bonds is
View More Questions