Question

Calculate the number-average molecular weight for a poly(vinyl chloride) for which the degree of polymerization is 21500.

Answer 1

Answer:

The number-average molecular weight for a poly(vinyl chloride) is 1,343,750 g/mol.

Explanation:

Molecular weight of the poly(vinyl chloride),$CH_2=CHCl =M=62.5 g/mol$

Number average molecular weight of the polymer = M_a

Degree of polymerization = n = 21500

$\frac{M_a}{M}=n$

$M_a=n\times m=21500\times 62.5 g/mol=1,343,750 g/mol$

The number-average molecular weight for a poly(vinyl chloride) is 1,343,750 g/mol.