JCE Software, SP16: Fields of pH

Fields of pH

Paul Mihas and George Papageorgiu
Laboratory of Chemistry, Department of Primary Education, Democritus University of Thrace, Alexandroupolis 681 00 Greece

Note:
Included in the General Chemistry Collection (SP-16)

Ordering Information

It is difficult to explain to students why the experimental values of pH usually do not agree with theoretical values. Students are taught that the pH of pure water is 7, but the measurement of a sample of distilled water usually gives pH values from 5.5-6.0. In addition, students learn that the ionization of a strong acid determines the pH of an aqueous solution and they cannot distinguish the cases in which ionization of water is significant. Fields of pH was developed to help students overcome such difficulties. The program helps students understand:

What happens to the pH when an acid (or base) solution is diluted?
What parameters influence the pH of dilute solutions?
Why is the pH of distilled water not 7?
How does temperature effect pH?

A screen from Fields of pH.

Fields of pH is designed to complement the instructor's lessons. It is simple for students to use and allows them to investigate on their own. The program considers only concentration and not activity.
Hardware and Software Requirements
Computer: Windows Compatible
CPU: 80486 or higher
RAM: ł 16 MB
Drives: Hard Drive, CD-ROM drive
Graphics: ł256 colors, 640 x 480
Operating System: Windows 95 or Windows 98

Availability
Available: Now

First Published: January 1997
Citation: Fields of pH J. Chem. Educ. Software SP16
Keywords: Lecture Aid; Computer Room; High School; General; pH

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JCE Online | Journal | Software | Internet | Happenings | About JCE | Contact JCE

Last Updated: March 16, 2001
Created: June 10, 1999 Created by: N. S. Gettys
Comments to: jceonline@chem.wisc.edu

© 1997 Division of Chemical Education, Inc., American Chemical Society. All rights reserved.



Fields of pH
Paul Mihas and George Papageorgiu Laboratory of Chemistry, Department of Primary Education, Democritus University of Thrace, Alexandroupolis 681 00 Greece

Note:	Included in the General Chemistry Collection (SP-16) Ordering Information

It is difficult to explain to students why the experimental values of pH usually do not agree with theoretical values. Students are taught that the pH of pure water is 7, but the measurement of a sample of distilled water usually gives pH values from 5.5-6.0. In addition, students learn that the ionization of a strong acid determines the pH of an aqueous solution and they cannot distinguish the cases in which ionization of water is significant. Fields of pH was developed to help students overcome such difficulties. The program helps students understand: What happens to the pH when an acid (or base) solution is diluted? What parameters influence the pH of dilute solutions? Why is the pH of distilled water not 7? How does temperature effect pH? A screen from Fields of pH. Fields of pH is designed to complement the instructor's lessons. It is simple for students to use and allows them to investigate on their own. The program considers only concentration and not activity. Hardware and Software Requirements Computer: Windows Compatible CPU: 80486 or higher RAM: ł 16 MB Drives: Hard Drive, CD-ROM drive Graphics: ł256 colors, 640 x 480 Operating System: Windows 95 or Windows 98 Availability Available: Now


News \| Issues \| CD-ROM / Video \| Find It! \| Technical Support \| For Authors
JCE Online \| Journal \| Software \| Internet \| Happenings \| About JCE \| Contact JCE

Last Updated: March 16, 2001 Created: June 10, 1999	Created by: N. S. Gettys Comments to: jceonline@chem.wisc.edu

© 1997 Division of Chemical Education, Inc., American Chemical Society. All rights reserved.