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 (Kf) 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) 0.752
C) -107.9
D) -113.8
E) -115.4
Correct Answer:
Verified
Q126: The vapor pressure of pure water at
Q127: A solution is prepared by adding 1.43
Q128: At 20°C, a 0.376 M aqueous solution
Q129: The concentration of sodium chloride in an
Q130: At 20°C, a 2.32 M aqueous solution
Q132: Calculate the freezing point of a 0.08500
Q133: Calculate the freezing point of a solution
Q135: At 20°C, an aqueous solution that is
Q136: The freezing point of ethanol (C2H5OH)is -114.6°C.
Q153: Water (H2O)and the alcohol methanol (CH3OH)are infinitely
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents