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Question: Answered & Verified by Expert
Insulin (C6H10O5)n dissolved in a medium shows osmotic pressure π at C gm/ cm3 concentration and 300 K temperature. The slope of plot of π against C is 4.1×10-3 . Molecular mass of insulin is
ChemistrySolutionsNEET
Options:
  • A 3×103
  • B 6×106
  • C 3×106
  • D 6×103
Solution:
1729 Upvotes Verified Answer
The correct answer is: 6×106
πV1000=nRT     V in Cm3
πV=wB×1000MBRT
π=wBV1000RTM=C×1000RTMB
When π is plotted against C, the slope will be equal to 1000RTMB .
So 4.1×10-3=1000×0.082×300MB
MB=6×106 .

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