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

Question

The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40, 000 . The poly dispersity index of the polymer is: (A) < 1 (B) > 1 (C) 1 (D) 0

Tardigrade Admin · Accepted Answer

PDi=( overlineMw/ overlineMn)=(40,000/30,000) So, the value is more than 1.

Q. The number average molecular mass and mass average molecular mass of a polymer are respectively $30, 000$ and $40, 000$ . The poly dispersity index of the polymer is:

< 1

> 1

1

0

$- 1$

$P D i = \frac{M _{w}}{M _{n}} = \frac{40 , 000}{30 , 000}$ So, the value is more than 1.

Q. The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000 . The poly dispersity index of the polymer is:

< 1

> 1

1

0

−1

PDi=Mn​Mw​​=30,00040,000​ So, the value is more than 1.

Q. The number average molecular mass and mass average molecular mass of a polymer are respectively $30, 000$ and $40, 000$ . The poly dispersity index of the polymer is:

$- 1$

$P D i = \frac{M _{w}}{M _{n}} = \frac{40 , 000}{30 , 000}$ So, the value is more than 1.