Part l : purification of mixtures liquid A and B (1:1)
1. Obtain 30.0 mL of liquid mixture in 100 ml round-bottom flask. Add a few of boiling chips
2. Assemble a simple distillaton apparatus as shown in figure 6.1 (the bulb of the thermometer must be below the arm of the distillation head)
3. Slowly heat the heating mantle.
- The lower boiling component is distilled, the boiling point of the mixture in the distillation flask will increase. “the temperature remains constant”
- Record the temperature after the first drop is collected. Collect it until the temperature changes. Keep Liquid A and record the volume of liquid A
4. Increase heating, record the temperature after the first drop is collected. Keep Liquid B and record the volume of liquid B.
!!!DO NOT DISTILL TO DRYNESS!!!
5. For your report
- What is the %yield of Liquid A and Liquid B?
- Conclude what is organic compounds of the liquid A and B? (table 1.2) explain why?