A) \[-66.78{}^\circ C\]
B) \[-33.39{}^\circ C\]
C) \[-15.58{}^\circ C\]
D) \[-1.86{}^\circ C\]
Correct Answer: B
Solution :
Mixture contains equal volumes of ethylene glycol and water. 1 mL water = 1 water (\[{{w}_{2}}\], solvent) 1 mL ethylene glycol = 1.13 g ethylene glycol (\[{{w}_{1}}\] , solute) Depressing in freezing point \[\Delta {{T}_{f}}=\frac{1000{{K}_{f}}\times {{w}_{1}}}{{{m}_{1}}{{w}_{2}}}\] \[=\frac{1000\times 1.86\times 1.113}{62\times 1}\times 1={{33.39}^{o}}C\] \[\therefore \] Freezing point of mixture \[=0-{{33.39}^{o}}C\]You need to login to perform this action.
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