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Q.

At 300K, the osmotic pressue of 300mL of a protein aqueous solution is 8.3 × 10–5 bar. The molar mass of protein is 104gmol–1. What is the weight (in g) of the protein present in this solution ?
(R = 0.083 L bar mol–1 K–1)

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a

0.1

b

0.01

c

10

d

1.0

answer is D.

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Detailed Solution

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π=CRT 8.3 ×10-5=C= 0.0831×300 on solving  C= 13×10-5 C= molesVolume moles =10-6  moles= massmolar mass  mass =10-6 ×  10-4=0.01g

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