Q.
If a 6.84% (wt./vol.) solution of cane-sugar (mol. Wt. = 342) is isotonic with 1.52% (wt./vol.) solution of thiocarbamide, then the molecular weight of thiocarbamide is
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a
152
b
76
c
60
d
180
answer is B.
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Detailed Solution
C1=C2n1V1=n2V2w1M1×V1=w2M2×V2 ⇒6.84342×100=1.52M2×100 M2=76
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