Question

The molar mass of a compound expresses the ratio of mass to moles Part A molar mass- _mass in gr tert-Butyl alcohol is a solvent with a Kf of 9.10 °C/m and a freezing point of 25.5 °C. When 0.807 g of an unknown colorless liquid was dissolved in 11.6 g of tert-butyl alcohol, the solution froze at 15.3°C number of moles This quantity can be determined experimentally by accurately measuring the mass of the sample and determining the corresponding number of moles based on some property of the sample. Freezing point depression and osmotic pressure measurements are frequently used for this type of determination. In each instance, the number of moles is determined from the colligative property of the solution. For osmotic pressure measurements the number of moles is calculated from the volume of the solution and the molarity. In freezing point depression measurements, the number of moles is derived from the molality of the solution Which of the following is most likely the identity of this unknown liquid? View Available Hint(s) ethylene glycol (molar mass 62.07 g/mol) O1-octanol (molar mass 130.22 g/mol) glycerol (molar mass 92.09 g/mol) 2-pentanone (molar mass 86.13 g/mol) O 1-butanol (molar mass 74.12 g/mol) Submit

Answer 1