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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
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$\gt1$
Polydispersity index (PDI)
$\begin{array}{r}=\frac{\text { Mass average molar mass }}{\text { Number average molar mass }}=\frac{M_W}{M_n} \\ \qquad \frac{40,000}{30,000}=1.3\gt1\end{array}$
$\begin{array}{r}=\frac{\text { Mass average molar mass }}{\text { Number average molar mass }}=\frac{M_W}{M_n} \\ \qquad \frac{40,000}{30,000}=1.3\gt1\end{array}$
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