Raoult's Law (5:39) (msu.edu) What type of components make an ideal solution that follows Raoult's Law? What does a diagram look like for a system that follows Raoult's Law? Can you identify the regions? What is the K-ratio for Raoult's Law? What simple principles must be followed for the K-ratios of the components in a binary mixture?

Raoult's Law Calculation Procedures (11:45) (msu.edu) Details on how to implement bubble, dew, and flash calculations for Raoult's Law. This screencast shows sample calculations for the bubble pressure and dew pressure of methanol+ethanol.

Comprehension Questions: Assume the ideal solution SCVP model (Eqns. 2.47 and 10.8).

1. Estimate the bubble pressure (bars) of 30% acetone + 70% benzene at 333K. 2. Estimate the dew temperature (K) of 30% acetone + 70% benzene at 1 bar. 3. Estimate the fraction vapor and phase compositions ethylamine+ethanol at 298K, 400mmHg and a feed of 60%amine.

This screencast shows binary bubble, dew, and flash sample calculations (uakron, 19min) for methanol and ethanol. It complements the previous video by showing how the bubble and dew pressures relate to the Pxy diagram. It supplements the previous video with examples of numerical results for the bubble and dew temperatures. An isothermal flash calculation requires a different approach, but it also encompasses the bubble and dew temperature and pressure calculations. In a flash calculation, the bubble result is recovered when V/F = 0. The dew result is recovered when V/F=1.

Comprehension Questions (Assume the ideal solution SCVP model.):

1. Estimate the bubble pressure (mmHg) and vapor composition of methanol+ethanol at 50 C and x_{M}= 0.4. (Note that the SCVP model should be used now.) 2. Estimate the dew temperature (C) and vapor composition of methanol+benzene at 50 C and y_{M}= 0.4. 3. Estimate the vapor fraction and vapor/liquid compositions of methanol+benzene at 50 C, 355mmHg, and z_{M}= 0.45. 4. Estimate the vapor fraction and vapor/liquid compositions of methanol+benzene at 50 C, 365mmHg, and z_{M}= 0.45. (Hint: think carefully.)

## Comments

Lira replied on Permalink

## Raoult's Law (5:39) (msu.edu)

Raoult's Law (5:39) (msu.edu)

What type of components make an ideal solution that follows Raoult's Law? What does a diagram look like for a system that follows Raoult's Law? Can you identify the regions? What is the K-ratio for Raoult's Law? What simple principles must be followed for the K-ratios of the components in a binary mixture?

Lira replied on Permalink

## Raoult's Law Calculation Procedures (11:45) (msu.edu)

Raoult's Law Calculation Procedures (11:45) (msu.edu)

Details on how to implement bubble, dew, and flash calculations for Raoult's Law. This screencast shows

sample calculationsfor the bubble pressure and dew pressure of methanol+ethanol.Comprehension Questions: Assume the ideal solution SCVP model (Eqns. 2.47 and 10.8).

1. Estimate the bubble pressure (bars) of 30% acetone + 70% benzene at 333K.

2. Estimate the dew temperature (K) of 30% acetone + 70% benzene at 1 bar.

3. Estimate the fraction vapor and phase compositions ethylamine+ethanol at 298K, 400mmHg and a feed of 60%amine.

Elliott replied on Permalink

## Binary Bubble, Dew, and Flash Calculations for Ideal Solutions

This screencast shows binary bubble, dew, and flash

sample calculations(uakron, 19min) for methanol and ethanol. It complements the previous video by showing how the bubble and dew pressures relate to the Pxy diagram. It supplements the previous video with examples of numerical results for the bubble and dew temperatures. An isothermal flash calculation requires a different approach, but it also encompasses the bubble and dew temperature and pressure calculations. In a flash calculation, the bubble result is recovered whenV/F= 0. The dew result is recovered whenV/F=1.Comprehension Questions (Assume the ideal solution SCVP model.):

1. Estimate the bubble pressure (mmHg) and vapor composition of methanol+ethanol at 50 C and

x= 0.4. (Note that the SCVP model should be used now.)_{M}2. Estimate the dew temperature (C) and vapor composition of methanol+benzene at 50 C and

y= 0.4._{M}3. Estimate the vapor fraction and vapor/liquid compositions of methanol+benzene at 50 C, 355mmHg, and

z= 0.45._{M}4. Estimate the vapor fraction and vapor/liquid compositions of methanol+benzene at 50 C, 365mmHg, and

z= 0.45. (Hint: think carefully.)_{M}