Solutions Question 337

Question: The solution containing 4.0 g of a polyvinyl chloride polymer in 1 litre of dioxane was found to have an osmotic pressure 6.0×10−4 atmosphere at 300K, the value of R used is 0.082 litre atmosphere mole−1K−1 . The molecular mass of the polymer was found to be

Options:

A) 3.0×102

B) 1.6×105

C) 5.6×104

D) 6.4×102

Show Answer

Answer:

Correct Answer: B

Solution:

πV=WmRT
∴6×10−4×1=4m×0.0821×300;

m=1.64×105.

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