1. Given the temperature vs. composition diagram for a mixture of acetone and ethyl acetate below. 80 Temperature (°C) 75 70 Vapor line 65 Liquid line 60 55 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Mole Fraction Acetone For a mixture of 40 mol % acetone and 60 mol % ethyl acetate: a. At which temperature will the mixture begin to boil? b. When the mixture begins to boil, what is the mol % acetone in the vapor? c. What is the boiling point of the liquid formed by condensation of the vapor from b above? d. How many theoretical plates (distillation stages) will be necessary to isolate acetone of at least 90% purity? 2. At a given temperature, liquid A has a higher vapor pressure than liquid B. Which liquid has the higher boiling point?
Added by Jade N.
Close
Step 1
- The mixture contains 40 mol% acetone and 60 mol% ethyl acetate. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 77 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The phase diagram for the ethanol-ethyl acetate system at 1 atm is drawn below. A. At what temperature will an ethanol-ethyl acetate mixture with a mole fraction of 0.2 in ethyl acetate start to boil? B. At this temperature, what is the mole fraction of ethyl acetate in the vapor phase? C. If the mixture in (A) is heated to 75°C, what is the composition of the liquid phase? D. What is the mole fraction of ethyl acetate in the azeotrope by ethanol and ethyl acetate? E. What is the boiling point of the azeotrope formed by ethanol and ethyl acetate? F. If the solution in (A) is subjected to fractional distillation, what is the mole fraction of ethyl acetate in the distillate? In the residue left in the flask? 80 78 76 74 72 70 0 0.2 0.4 0.6 0.8 1 Temperature Mole fraction ethyl acetate
Sri K.
80 75 70 Temperature (°C) 65 Vapor line Liquid line 60 55 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Mole Fraction Acetone Figure 1. Temperature-composition diagram for acetone and ethyl acetate
Shyam P.
A phase diagram of temperature versus composition for a mixture of the two volatile liquids hexane (bp $=69^{\circ} \mathrm{C} )$ and decane $\left(\mathrm{bp}=126^{\circ} \mathrm{C}\right)$ is shown. Assume that you begin with a mixture containing 0.60 $\mathrm{mol}$ of decane and 0.40 mol of hexane. (a) What region on the diagram corresponds to vapor, and what region corresponds to liquid? (b) At what approximate temperature will the mixture begin to boil? Mark as point A on the diagram the liquid composition at the boiling point, and mark as point B the vapor composition at the boiling point. (c) Assume that the vapor at point $\mathrm{B}$ condenses and is reboiled. Mark as point $\mathrm{C}$ on the diagram the liquid composition of the condensed vapor and as point $\mathrm{D}$ on the diagram the vapor composition of the reboiled material.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD