The number average molar mass and mass average molar mass of a polymer are respectively $30, 000$ and $40, 000$ . The polydispersity index (PDI) of the polymer is:

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Solution

The correct option is D $> 1$
The number average molar mass $M_{n}$ and mass average molar mass $M_{w}$ of a polymer are respectively 30,000
and 40,000. The polydispersity index (PDI) of the polymer is $> 1$ .
$P D I = \frac{M_{w}}{M_{n}} = \frac{40, 000}{30, 000} = 1.333$

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The number average molar mass and mass average molar mass of a polymer are respectively 30,000 and 40,000. The polydispersity index (PDI) of the polymer is:

The correct option is D >1The number average molar mass Mn and mass average molar mass Mw of a polymer are respectively 30,000and 40,000. The polydispersity index (PDI) of the polymer is >1.PDI=MwMn=40,00030,000=1.333

The number average molar mass and mass average molar mass of a polymer are respectively $30, 000$ and $40, 000$ . The polydispersity index (PDI) of the polymer is:

The correct option is D $> 1$
The number average molar mass $M_{n}$ and mass average molar mass $M_{w}$ of a polymer are respectively 30,000
and 40,000. The polydispersity index (PDI) of the polymer is $> 1$ .
$P D I = \frac{M_{w}}{M_{n}} = \frac{40, 000}{30, 000} = 1.333$