Question

7. If 23:0M solution of glucose (CHO), a 2.0 M solution of Na,$0, and a 1.0 M solution of (NH4)3PO4, is made, which solution will have the lowest vapor pressure, highest boiling point, and lowest freezing point? In Part 1 of this experiment you will determine the freezing point of benzophenone. Ben- zophenone is a solid at room temperature and is completely dissolved at 50°C. By letting the liquid cool and measuring the temperature as a function of time, the freezing point, Tp, of benzophenone is obtained. 8. liquid cools liquid freezes solid cools Temperature Tf supercooling crystals form Time For pure benzophenone the temperature drops only a few degrees. Crystals form and the temperature goes back up and then remains constant. The dip in the curve is due to super- cooling. What is supercooling?