Q.
1.26 g of the protein is present in the aqueous solution of 200 cm3 .Calculate the molar mass of the protein,if the osmotic pressure of such solution is 2.57 x 10-3 bar at 300 K.
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a
61000 g mol-1
b
60304 g mol-1
c
60000 g mol-1
d
61009 h mol-1
answer is B.
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Detailed Solution
Given, π=2.57×10-3bar,V=200cm3=0.200 L T=300 K, R=0.082 L bar mol-1K-1 M2=w2RTπ×V M2=1.26×0.082L bar K-1mol-1×300 K2.57×10-3bar ×0.200 L =60304 g mol-1
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