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A solution of protein (extracted from ca...

A solution of protein (extracted from carbs) was prepared by dissolving `0.75 g` in `125 cm^(3)` of an aqueous solution. At `4^(@)C` and osmotic pressure rise of `2.6 mm` of the solution was observed. Then molecular weight of protein is (assume density of solution is `1.00 g//cm^(3)`):

A

(a) `9.4 xx 10^(5)`

B

b) `5.4 xx 10^(5)`

C

( c) `5.4 xx 10^(10)`

D

(d) `9.4 xx 10^(10)`

Text Solution

Verified by Experts

The correct Answer is:
B
Given `h = 2.6 mm`
`:. pi = hdg = (2.6)/(10) xx 1 xx 980 " dyne " cm^(-2)`
Also `pi = (w)/(V.m)ST` (in `C.G.S`. System)
or `(2.6 xx 1 xx 980)/(10) = (0.75 xx 8.314 xx 10^(7) xx 277)/(125 xx m)`
`:. m = 5.4 xx 10^(5)`
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