Choose all that apply. Practice applications of freezing point depression are, Putting salt on the roads to melt ice. Making ice cream. 'Winterizing' the plumbing by placing antifreeze in toilet tanks. Placing a water-filled ice try in the freezer.

The total mass of a solution is 182.8 g. The solvent mass is 125.2 g. What is the mass percent of the solute? A) 42.5 % B) 21.1 % C) Not enough information is given. D) 31.5 % E) 68.5 %

A solution was prepared by dissolving 120.0 g of KCl in 315 g of water. Calculate the mole fraction of KCl. (The formula weight of KCl is 74.6 g/mol. The formula weight of water is 18.0 g/mol.) Express the mole fraction of KCl to two decimal places. • View Available Hint(s) Submit

The system has a lower freezing point than water. Presence of the solute lowers the triple point. Presence of the solute increases the triple point. For all substances, the change in the triple point results in a lower freezing point. For water, the change in the triple point results in a lower freezing point. O None of these. Hint Save for Later A

8) Which of the following solutions will have the highest freezing point? (Circle your selection) 0.53 m of Na₂S Na Nas (0.53m) (3) = 1.59" b. 0.92 m of CH3OH x c. 0.65 m Li3N (0.92) (³) = 4.6 (0.65) (4) = 2.6 9) Which of the following solutions will have the highest boiling point? (Circle your selection) 0.46(3) a. 0.46 m of Na₂S 6 c. 0.97 m of CH3OH 0.69 m LiN

The phase diagram for a pure solvent and a dilute solution of a solute are shown below. Assume the solute is nonvolatile. Identify the freezing point of the dilute solution. Solid Liquid HE Pressure (atm) Gas Temperature (K) IV A) I B) II C) III D) IV

Match the following aqueous solutions with the appropriate letter from the column on the right 1. 0.22 m KCH3COO 2. 0.13 m Cal, 3. 0.12 m CoCl2 4. 0.46 m Ethylene glycol(nonelectrolyte) A. Highest boiling point B. Second highest boiling point C. Third highest boiling point D. Lowest boiling point

Match the following aqueous solutions with the appropriate letter from the column on the right. 1.0.14 m Ca(NO3)2 A. Lowest freezing point 2.0.12 m Cr(NO3)3 B. Second lowest freezing point 3.0.15 m MgBr2 C. Third lowest freezing point 4.0.52 m Sucrose(nonelectrolyte) D. Highest freezing point

nolageiged thiot pnicee Data Activities 1 and 2 Data Table 1 20/11/11 Temperature (°C) Pure Lauric Acid Temperature (°C) Lauric Acid + 0.4 g Temperature (°C) Lauric Acid + 0.5 g Benzoic Acid Time (minutes) Benzoic Acid 65.0 0.0 60.0 65.0 0.5 57 59 58 55 1.0 57 52 1.5 50 48 47 2.0 49 46 47 2.5 48 45 46 3.0 42 44 45 3.5 41 43 42 4.0 43 4.5 40 41 5.0 나D 38 to 41 5.5 40 36 6.0 41 40 35 6.5 41 40 35 7.0 41 40 35 7.5 40 35 8.0 41 40 35 O 2016 Carolina Biological Supply Company

Match the following aqueous solutions with the appropriate letter from the column on the right.