EAS 4550: Geochemistry
Problem Set 4
Due October 2, 2013
2
3
G ex = BX2 + CX2 + DX2
G ex = (WG1 X2 + WG2 ) X1 X2
reduces to:
1. Show that:
with appropriate substitution for a binary system in which X1 = 1-X2.
2. Interaction parameters for the enstatitedio
Geological Sciences 4550:
Geochemistry
Problem Set 2 Solutions
Due Sept. 18, 2013
1. a.) Using the enthalpies of formation given in Table 2.02, find H in Joules for the reaction:
albite jadite + quartz
NaAl2Si2O8 NaAl2SiO6+ SiO2
b.) Which assemblage (side
Geological Sciences 4550:
Geochemistry
Problem Set 3 Solutions
Due Sept. 25, 2013
1. The following analysis of water is from the Rhine River as it leaves the Swiss Alps:
HCO
3
Cl
Ca
2+
Na
113.5 ppm
1.1 ppm
40.7 ppm
+
1.4 ppm
SO 2
4
NO
3
Mg
K
2+
+
36.0
EAS 4550: Geochemistry
Problem Set Five
Due Oct. 9, 2013
1. Use the web applet version of MELTS (http:/melts.ofmresearch.org/index.html) to answer the following questions. MidOcean Ridge Basalt (MORB) glass has the average composition shown
in the adjacen
Geological Sciences 4550:
Geochemistry
Problem Set 1 Solution
Due Sept. 11, 2013
1.) Complete the proof that V is a state variable by showing that for an ideal gas:
V
V
=
P
T
(Hint: apply the reciprocity relation to the differential of V with respect to T
EAS 4550: Geochemistry
Prelim Examination
Oct. 19, 2011
Name _
Show all work for partial credit. The value of R is 8.314 J/mol-K.
1. Consider a solution of plagioclase (NaAlSi3O8CaAl2Si2O8). 15 points.
(a) Write a general expression for the chemical poten