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Separation of Benzene and Toluene Mixture

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Separation of Benzene and Toluene Mixture

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Questions and Answers

What is the desired mole percentage of benzene in the top product after separation?

90 mole % (correct)

40 mole %

70 mole %

100 mole %

What is the maximum mole percentage of benzene allowed in the bottom product?

10 mole % (correct)

15 mole %

0 mole %

5 mole %

What is the average relative volatility of benzene relative to toluene in this separation?

1.5

2.0

2.4 (correct)

3.0

At what condition is the feed assumed to be at its bubble point?

<p>Liquid phase</p> Signup and view all the answers

Which piece of data is required to plot the equilibrium diagram for this mixture?

<p>Equilibrium data at 760 mm Hg pressure</p> Signup and view all the answers

Study Notes

Problem Description

A mixture of benzene and toluene is to be separated.
The feed contains 40 mole % benzene.
The desired top product should contain 90 mole % benzene.
The desired bottom product should contain no more than 10 mole % benzene.
The relative volatility of benzene to toluene is 2.4.

Calculations

The number of theoretical plates required at total reflux needs to be calculated.
The minimum reflux ratio needs to be calculated, assuming the feed is a liquid at its bubble point.

Data

Vapour pressure data for benzene (A) and toluene (B) is provided at different pressures ranging from 760 to 1360 mm Hg.

Equilibrium Diagram

An equilibrium diagram needs to be plotted after generating x-y data.
The equilibrium diagram shows the relationship between the liquid and vapor compositions of a binary mixture at equilibrium.

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Description

This quiz covers the principles of separating a benzene-toluene mixture, focusing on the calculations for the number of theoretical plates and minimum reflux ratio at total reflux. Participants will also need to generate x-y data for plotting an equilibrium diagram illustrating the relationship between liquid and vapor compositions. Test your understanding of distillation and separation processes with this quiz!