I am asked to plot the acetone composition in the vapor vs. the liquid composition. How can I do that? and how to I find the azeotrope using the graph?

 

average refractive average refractive Mole fraction Mole fraction Sample index(distillate) index(residue) (distillate) (residue) 1 1.3706 1.3833 0.889 0.748 23 2 1.3854 1.3963 0.724 0.601 3 1.4018 1.4064 0.538 0.484 4 1.3940 1.4034 0.637 0.519 567 1.4356 1.4313 0.135 0.188 1.4214 1.4190 0.307 0.336 1.4094 1.4106 0.449 0.435 8. 1.3973 1.4049 0.589 0.502