Estimate Surface Tension of a Mixture

Example 42 Estimate surface tension of a mixture. At 298.15 K, Daiibert et al. " report the hqiiid density of n-pentane to be 8.617 kmol/nd and its surface tension to be 15.47 mN/m. From the same source, the corresponding values for dichloromethane are 15.52 kmol/m and 27.22 mN/m. Using Eqs. (2-170) and (2-169) for a mixture of 0.1606 mole fraction n-pentane and 0.8394 mole fraction dichloromethane ... 

---