Question 4.9: Estimation of the Diffusion Coefficient of Toluene in Air To...

Estimation of the Diffusion Coefficient of Toluene in Air
Toluene (C_6H_5OH, CAS 108-88-3) is a common solvent with a sweet, pungent odor and a PEL equal to 200 PPM. From handbooks and Appendix A.10 the following data can be found:

To do: Compute the diffusion coefficient of toluene in air at STP using Eq. (4-29).

D_{12}=\frac{0.43\left(\frac{T}{100} \right)^{1.81}\sqrt{\frac{1}{M_1} +\frac{1}{M_2} } }{P\left(\frac{T_{c1}T_{c2}}{10000} \right)^{0.1405}\left[\left(\frac{V_{c1}}{100} \right)^{0.4}+\left(\frac{V_{c2}}{100} \right)^{0.4} \right]^2 } \frac{cm^2}{s}  (4-29)