AJS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

American Journal of Science, Vol. 301, February 2001, P.103-111; doi:10.2475/ajs.301.2.103

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Web of Science (3)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Rock, P. A.
Right arrow Articles by Walling, E. M.
Right arrow Search for Related Content
Right arrow Articles by Rock, P. A.
Right arrow Articles by Walling, E. M.
GeoRef
Right arrow GeoRef Citation

Gibbs Energy of Formation of Dolomite from Electrochemical Cell Measurements and Theoretical Calculations

Peter A. Rock*, Gregory K. Mandell*, William H. Casey** and Erin M. Walling***

* Department of Chemistry, University of California, Davis, California 95616
** Department of Land, Air, and Water Resources and Department of Geology, University of California, Davis, California 95616
*** Department of Chemistry and Department of Land, Air, and Water Resources, University of California, Davis, California 95616

New thermodynamic data are presented for the Gibbs energy of formation of dolomite (CaMg(CO3)2(s)). Using electrochemical cells, we find {Delta}Gf°[CaMg(CO3)2(s))] equal to –2147.82 kJ · mol–1. The performance of lattice energy calculations on dolomite, calcite, and magnesite yields a theoretical value of –2148.90 kJ · mol–1 for {Delta}Gf° [CaMg(CO3)2(s))]. Both our theoretical and experimental results show excellent agreement with drop calorimetry experiments done by Capobianco and Navrotsky (1987) which were used to determine the enthalpy of formation of dolomite from those of calcite and magnesite.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the American Journal of Science.