Assignment # 2
Due Date: 09/30/15
1. The enthalpy of a real gas is given as a function of the entropy of the gas and the pressure:
2
7
H NAP e
2S
7 NR
NBP NC
where H is the enthalpy of the gas, N is the number of moles of the gas, A,B, and C are
constant

Assignment # 3
1. Pure chromic oxide (Cr2O3) reacts with the stoichiometric amount of pure aluminum, both initially at 25 0C, to
produce aluminum oxide (Al2O3) and pure liquid chromium. If the maximum temperature attained in the crucible
is 19000C, state

Assignment # 5
MS/ME 505
Due Date: 12/7/15
1. (Note: Saturated vapor pressure over pure liquid Mn at 1863 K is 0.0493 atm)
2.
Free energy change of melting of CaF2 is 31,200-18.45T (J) and that of MgF2 is 58160-37.86T (J).
3.
The entropy of melting of alu

Assignment # 1
MS/ME 505
Due Date: 09/23/15
1.
Two moles of an ideal gas, in an initial state P = 5 atm., V = 10 liters, are taken reversibly, in a clockwise
direction around a circular path given by (V-10)2 + (P-10)2 = 25. Calculate the amount of work do

Assignment # 4
MS/ME 505
Due Date: 11/9/15
1. One mole of solid Cr2O3 at 2500 K is dissolved in a large volume of liquid ideal solution of Al 2O3 and
Cr2O3 in which XCr2O3 = 0.2 and which is also at 2500 K. Calculate the changes in enthalpy and
entropy ca