NotesFAQContact Us
Search Tips
Back to results
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ960372
Record Type: Journal
Publication Date: 2011-Dec
Pages: 3
Abstractor: As Provided
ISSN: ISSN-0021-9584
Equilibrator: Modeling Chemical Equilibria with Excel
Vander Griend, Douglas A.
Journal of Chemical Education, v88 n12 p1727-1729 Dec 2011
Equilibrator is a Microsoft Excel program for learning about chemical equilibria through modeling, similar in function to EQS4WIN, which is no longer supported and does not work well with newer Windows operating systems. Similar to EQS4WIN, Equilibrator allows the user to define a system with temperature, initial moles, and then either total pressure or volume. Unlike EQS4WIN, Equilibrator is designed to let the user find the point of equilibrium using a slider to shift the extent of reaction. The program simultaneously calculates the reaction quotient, the Gibbs free energy, "G", and "[delta]G"; and immediately updates pertinent graphs for feedback. With so many simultaneous ways to evaluate the position of the reaction with regard to equilibrium, Equilibrator is a superior pedagogical tool for helping students truly understand the basic principles of chemical equilibria. (Contains 3 figures and 3 notes.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A