A) 304.60 g
B) 804.32 g
C) 204.30 g
D) 400.00 g
Correct Answer: B
Solution :
\[\Delta {{T}_{f}}={{K}_{f}}\]m for ethylenglycol in aq. solution \[\Delta {{T}_{f}}={{K}_{f}}\frac{w}{mol.\,w\,t.}\times \frac{1000}{w\,t\,of\,solvent}\] \[6=\frac{1.86\times w\times 1000}{62\times 4000}\] \[\Rightarrow \,\,w=800\,g\] So, weight of solute should be more than 800 g.You need to login to perform this action.
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