# 26.3-4. Steam Distillation of Ethylaniline. A mixture contains 100 kg of H20 and 100 kgof ethylaniline (mol wt 121.1 kg/kg mol), which is immiscible with water. A veryslight amount of a nonvolatile impurity is dissolved in the organic. To purify the eth-ylaniline, it is steam-distilled by bubbling saturated steam into the mixture at a totalpressure of 101.32 kPa (1 atm). Determine the boiling point of the mixture and thecomposition of the vapor. The vapor pressure of each of the pure compounds isfollows (T1):(XCТетрeraturePA (water)(kPa)PB (ethylaniline)(kPa)E400В°CK1.3348.580.6353.82.6787.796.0369.23.0498.399.15372.35.33163.3113.2386.4SCE65

Question
84 views
check_circle

Step 1

In steam distillation, the components are immiscible and hence the total pressure is the sum of individual vapour pressures. Consequently, the individual vapour pressure are the partial pressures of the components. The moles of water and ethylaniline are denoted by mA and mB, respectively. The vapour pressure of the water, ethylaniline and total pressure is denoted by PA, PB and PT, respectively.

Step 2

Plot a graph between Temperature and the Total pressure to get the temperature corresponding to the pressure of 101.32 kPa. This temperature is the required boiling point of the mixture. The required boiling temperature is 372.2 K.

Step 3

According to the Dalton’s law of partial pressure, total pressure is equ...

### Want to see the full answer?

See Solution

#### Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in