Department of Earth Science |Northeastern Illinois University

AQUEOUS GEOCHEMISTRY
ESCI 406
Spring, 2005

Homework #2: Due Monday, February 7, 2005                                                                     Sanders

Complete and hand in both parts of this homework assignment.

PART I: Portfolio of Analyses

Construct the portfolio by binding it together in some sort of a notebook or with covers that will protect it.  Use a type of binding that will allow you to remove or insert more pages.  For example, a three-ring binder will work well, or a plastic comb-type binder.

* Create a cover page for the whole binder, giving the title "Portfolio of Analyses", the course name, semester, and year, and your name.

* Create a Table of Contents page.  List the components of the portfolio, in order (no page numbers needed yet).  Each time you add to the portfolio throughout the semester, update your Table of Contents.

* For each analysis set that you include in the binder (remember, you found five of these for Homework #1), type a cover page that gives a title for the analysis and the complete citation for the source.  For example, you might type a cover page that looks something like this:




Analysis Set 1

Ground Waters of the Serengeti Plain


Source: Sanders, Laura L., 2005.  Geochemical evolution of ground water from Serengeti National Park, Tanzania.  Ground Water, 73, 307-315.    [this is a fictitious reference!]

You may choose to separate entries in the binder by using a tabbed page or a colored page.  This will make it easier for you to find entries quickly.

* Create and include in the portfolio a bibliography page, called "References Cited", in which you give, in standard format, citations for each of the entries you have included in the portfolio thus far.  You may choose which format you use: the one our textbook uses, or the Turabian format (which you will use for your thesis).

* In the References Cited, include a reference to our course textbook. 

* Hand in the whole portfolio with all the components listed here, including the five analysis sets (cover page, cover page for each analysis set, and References Cited.)


PART II:  Problems from the end of Chapter 2 of the Eby textbook.

At the end of Chapter 2 are numerous problems that involve chemical reactions.  In some, you are given the reaction equation, and in some, you have to first create and balance the equation.  For now, ignore the problem the textbook poses, and simply write and balance a reaction equation that fits the problem. 

Once you have written the reaction equations, for each reaction, calculate the DHRo .  Use data from Appendix II of the textbook, or data given in the problem itself.  Work on the reactions in these problems:

        #   9
        # 23
        # 24(a)  [the reaction is the simple dissolution of magnesite]
        # 24(c)  [the reaction is the formation of the aqueous complex MgCO3(aq) from the magnesium and carbonate ions]
        # 26      [the reaction is the dissolution of gypsum]
        # 27(a)  [the two reactions are the dissolution of fluorite and the dissolution of villiaumite] 
        # 28      [in each of the two cases, the reaction is the organic liquid " the organic liquid dissolved in water]
        # 29

© 2005 Laura L. Sanders.  Last updated January 31, 2005.