Question

Post-Laboratory Questions 1. For macroscale distillations, or for microscale distillations using glassware with elastomeric connec- tors, plot the data for simple distillation and for fractional distillation on one graph. Plot temperature on the vertical axis and total volume of distillate on the horizontal axis, as shown in Figure 6 earlier in this module. Draw a smooth curve through the data points for each distillation. 2. (a) At what temperatures were the first drop of distillate collected in the simple and fractional (b) Using Figure 1, estimate the composition of these initial samples of distillate. Based on the results, distillations? what conclusion can you draw regarding the relative efficiencies of the two separations? 3. For macroscale distillations, or for microscale distillations using glassware with elastomeric connec- tors, compare the plot from your simple distillation with that from your fractional distillation. In ature occur more gradually? Which method is more effective in which case do the changes in temper achieving separation? Briefly explain. 4. For Hickman stl or for test tube microscale distillations, compare the refractive index data for simple and fractional distillations. Do the data suggest which distillation procedure is more efficient? Briefly explain

Answer 1

2 (a) The point at which bath to duliuation fures with each other is the point where frist drop of distiuale collected (temperature) i.e 100degree C (b) From the grop, it stimale that as the temp series the percent of toluene demeares and that to for cyclohexane