1. Describe the relationship of the boiling point elevation, freezing point depression, osmotic and vapor pressure in the solution? 2. Between electrolyte and non electrolyte solution, which will have higher boiling point elevation and lower freezing point depression? Why?

III. Complete the table below. Show complete solutions. Box/Encircde your final answers reported in proper units and number of significant figures. Assume that all solutions were prepared at 25°C, and the solutes were completely dissolved. Molar masses should be based on the CHEM 18.1 Periodic Table provided in Moodle. Density values, if needed, can be found at the last page of this drill. SOLUTION DESCRIPTION MOLARITY (M) MOLALITY (m) %(w/w) 12.58 grams potassium hydroxide (KOH) dissolved in 100.00 ml ethanol Ethanolic КОН ABOGA (assume that the amount of solute has no effect to the volume of the solution)

3. Why is molality and not molarity used to express concentration in the equations for freezing point depression and boiling point elevation?

A solution is made by dissolving 0.731 mol of nonelectrolyte solute in 783 g of benzene. Calculate the freezing point, Tf, and boiling point, T,, of the solution. Constants can be found in the table of colligative constants. Tf = 1.908 Incorrect Th = 82.58