When performing arecrystallization, slocent with a boiling point less must be use than the melting point of the compound being recrystallized. For benzil ( m.p.94-95C) which solvent would be best for this recrystallization?  toluene (b.p. 110C)  H2O (b.p.100 C) ethane( bo -98) methanol(bp64.7)

Name: Date: Section: Prelaboratory Assignment: Determination of Molecular Weight Through Freezing Point Depression Analysis 1. What is the vapor pressure at 20'C of a solution of 3.50 g of naphthalene C1Hg in 25.0 g of benzene (v.p. pure benzene =74.7 mm Hg at 20°C) 2. Calculate the freezing point of a solution of 25 mL of CH,OH (d = 0.792 g/ml) in 325 mL of water (d= 1.00 g/ml, k, 1.86 °C/m). %3D %3D %3D A5.00

Calculate the boiling point of a solution containing 25 g = 342 g) dissolved in 150 g of water. 29. sugar (molar mass a. 100.25 °C b. 0.25 °C c. 99.75 °C d. 100 °C 30. If S (s) + 02 (g) SO2 (g) have A H = -296.8 K and 280 (s) + 02 (g) 2S03 (g) and A H-798.4 kJ what will be the S (s) + 3/202 (g) SO3 (g) AH a. -696.0 kJ b. 696.0 kJ c. -696.0 J d. 696.0

A 5.83-mg sample of compound F (whose empirical formula is CH) dissolved in 57.3 mg of camphor lowered the melting point of the camphor by 26.4 degrees C . Calculate the molecular weight and determine the molecular formula for compound F.