A Solution Is Prepared by Dissolving 7

Multiple Choice

A solution is prepared by dissolving 7.00 g of glycerin (C₃H₈O₃) in 201 g of ethanol (C₂H₅OH) . The freezing point of the solution is °C. The freezing point of pure ethanol is - 114.6 °C at 1 atm. The molal- freezing- point- depression constant (K_f) for ethanol is 1.99 ° C/m. The molar masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol, respectively.

A) - 121.3
B) - 107.9
C) - 113.8
D) 0.752
E) - 115.4