A gas mixture of 0.270 mol acetic acid/mol, 0.300 mol water/mol, and 0.430 mol inerts/mol at 88.0 C is compressed isothermally until condensation occurs. At what pressure, Pdp, does the condensation first form, and what is the composition of this condensate? Pdp=   xa=   xw=

4. Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition, specify the nature of the final microstructure of a small specimen that has been subjected to the following time-temperature treatments. In each case assume that the specimen beings at 760°C and that it has been held at this temperature long enough to have achieved a complete and homogeneous austenitic structure. (1) Cool rapidly to 700°C, hold for 104 sec, then quench to room temperature (2) Cool rapidly to 400°C, hold for 20 sec, then quench to room temperature (3) Rapidly cool to 575°C, hold for 20 sec, rapidly cool to 350°C, hold for 100 sec, then quench to room temperature. Temperature (°C) 800 700 600 500 400 300 200 100 10-1 A N A A 11 P Eutectoid temperature -- 50% 1400 1200 1000 -800 600 400 10³ 104 105 1 10 10² Time (s) Adapted from H. Boyer (Editor). Atlas of Isothermal Transformation and Cooling Transformation Diagrams, American Society for Metals, 1977, p. 28. Temperature (°F)

Effusion of gases A mixture of iodine and oxygen gas are escaping into a vacuum at 298 K. If 10 particles of oxygen have escaped how many particles of iodine have escaped into the vacuum? (Use Grahams law of effusion)

Imagine we calculate Z and the molar volume of ethylene at 25°C, 12 bar using the following relations.  (a) ideal gas law, (b) the general correlation about , and (c) RK eqn. Explain which answer you expect to be the most accurate and the reason behind it.