Question

Vapour pressure data for n-hexane and n-octane are given in the following table. Vapour Pressure (mmHg) n-Hexane n-Octane Temperature (°F) 155.7 760 121 175 1025 173 200 1480 278 225 2130 434 250 3000 654 258.2 3420 760 Fig. Q1 (a) Construct a T-xy plot for the system at 1atm (760 mmHg) pressure. Also, plot y versus x. Base the plots on the hexane. State any assumptions clearly. Graph paper is attached, but you can also use any relevant software package to illustrate the graph.

Answer 1

so (Assuming Ideal Sol) From Rosults Low eve hove Pe=ni Piul Pe= Pitpol Pq = P sur Play Py = Piet P (1-x1). .P. - P = x Pil & Pv sels. PY-BT we calculete 14 for each using Rouh low lu Pin PT. & obling he hove Toxy date by Colculating 05:

300 250 T(F) 155.7 175 200 225 250 258.2 Plv 760 1025 1480 2130 3000 3420 P2v 121 173 278 434 654 760 X y 1 1 0.688967 0.929199 0.400998 0.780891 0.192217 0.538713 0.045183 0.178355 0 0 200 150 100 50 0 0 0.2 0.4 0.6 0.8 1 1.2 ху - T-x -T-y

using give data we can find the required T-xy data from roults law

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