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set 7 - Chem 3433 Problem Set 7 Due before class on 1 Find...

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Chem 3433 Problem Set 7 Due before class on 10/19/11 1. Find G mix , S mix and H mix for an ideal solution prepared from 1.28 mol of benzene and 1.09 mol of toluene at 20ºC. 2a. Derive Equation 5.41 using Raoult s Law. 2b. Next, derive Equation 5.45. 3a. Reproduce Figures 5.30 and 5.31 using a spreadsheet 3b. Make a plot like Figure 5.32, assuming that * * b a P P = 10. 4a. The vapor pressure is measured over a mixture of acetone and chloroform. X acetone 0.0 0.2 0.4 0.6 0.8 1.0 P acetone /torr 0 35 82 142 219 293 P chloroform/ torr 347 270 185 102 37 0 Plot the total pressure, the pressure of acetone, and pressure of chloroform versus the mol fraction of acetone in the solution. Is the solution ideal of non-ideal? From the graph, use the first two points to estimate the Henry’s Law constant for acetone and chloroform. 4b. Calculate the case 1 activities for acetone and chloroform 4c. Calculate the case activities for acetone and chloroform 5. Three mol of A are mixed with thee mol of B at P mix . Given the following phase diagram of
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