Team:ETH Zurich/xylene

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Latest revision as of 21:54, 28 October 2011

Can you feel the smoke tonight?
 

Contents

How we calculated the concentration of m-xylene in the medium...

1. We assumed that 5 ml xylene is enough to saturate the gas phase in the Erlenmeyer flask.

The vapor pressure was calculated at 37 °C:
Dampfdruck.png


with the following C1-C5 values:
ETH Dampfdruck c.png


2. The Henry´s constant at 37 °C can be calculated by the Van´t Hoff equation from the literature value at 25°C

Henry constante.png


3. By Henry´s law we calculated the concentration of xylene in the medium

Henry law.png


4. For the oil/xylene mixtures we assumed that paraffin oil has a vapor pressure of 0 and used Raoult's law

Raoult's law.png


xylene in oil in % concentration of xylene in LB [mM]
100 3.1
50 1.55
25 0.775
15 0.465
10 0.31
7.5 0.233
5 0.155
2.5 0.078
1 0.031
0.75 0.023
0.5 0.016
0 0


ETH Back.png


References

[1] Perry’s Chemical Engineers Handbook 8th Edition

[2] CRC Handbook of Chemistry and Physics, 92nd Edition, p.5-189

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