What is the advantage and disadvantage of simple and fractional distillation?What is the vapor pressure  of mixture at 50 oC?

Simple and Fractional distillation – Lab Report Format
1. Introduction
2. Experimental condition
3. Data
• Data table for simple and fractional distillation your unknown mixture
• In one window, show the simple and fractional distillation graphs with line graph format •The relative ratio of unknown compounds
• Name and ratio of two of unknowns in your mixture.
4. Results and Discussion
• What is the advantage and disadvantage of simple and fractional distillation?
•Compare the simple and fractional distillation with respect to your unknown
• How the identity and ratio of unknown compounds were identified by distillation

1. A mixture of two miscible liquids with a widely different boiling point is distilled. The temperature of  distilled liquid is observed to plateau and then drop before rising again. Explain the temperature drop.
2. One mole of compound A, with vapor pressure 420 mmHg at 50 oC, mixed with 5 moles of compound  B, with vapor pressure 480 mmHg at 50 oC to form a homogeneous solution. What is the vapor pressure  of mixture at 50 oC?