Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Chemistry  >>  Polymers
0 votes

The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000.The polydispersity index of the polymer is

$\begin{array}{1 1}(a)\;< 1&(b)\;> 1\\(c)\;1&(d)\;0\end{array}$

Can you answer this question?

1 Answer

0 votes
Given :
$\bar{M_w}$ of the polymer =40,000
$\bar{M_N}$ of the polymer =30,000
Poly dispersity index (PDI) of a polymer is
$\Rightarrow \large\frac{40000}{30000}$
$\Rightarrow 1.33 > 1$
Hence (b) is the correct answer.
answered Mar 14, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App