JCE Software: Chemistry Comes Alive!: Sample Movie: Electrolysis of Water


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Home > JCE Software > Chemistry Comes Alive! > Sample Movies >

Electrolysis of Water

The electrolysis of water reactions and animation shown in the movies referenced below come from the Chemistry Comes Alive! (CCA!) video collection. CCA! is published by the Journal of Chemical Education Software, Division of Chemical Education, Inc., American Chemical Society.

The Movies

	An electric current is passed through two cells containing sodium sulfate solution. At one electrode, gas is generated and the indicator color changes from green to blue. At the other electrode gas is also generated, but in this case the indicator color changes from green to yellow. View movie >>
	When a current is passed through a sulfuric acid solution, gases are generated at each electrode. The volumes of gas are in a ratio of two to one. A lighted match causes the first gas to ignite with a loud "pop". A glowing splint inserted in the other gas burns brightly. View movie >>
	An animation simulates the flow of charge in a water electrolysis cell and shows the half-reactions that take place at each electrode. View animation >>

About This Topic

Exam and Quiz Questions

1. Based on the volumes of gases generated, in which cylinder is hydrogen being produced? Do the chemical tests of the two gases support this conclusion? Explain.

2. Write balanced equations for the half-reactions taking place during the electrolysis of aqueous sodium sulfate. Do these reactions account for the color changes at the two electrodes? Explain.

3. Why was it necessary to add sodium sulfate or sulfuric acid in order to electrolyze the water?

Finding This Topic in the CCA! Collection

Following are links to the table of contents of the CCA! volume or volumes that contain this movie.

	Chemistry Comes Alive! Volume 3 > Electrochemistry
	Chemistry Comes Alive! Volume 3 > Oxidation/Reduction Aqueous Solutions
	Chemistry Comes Alive! Volume 1 > Decomposition Reactions

CCA! volumes are organized according to topics in chemistry. Some movies are included on more than one volume of CCA! because they can be used to demonstrate more than one topic or idea.

Viewing Chemistry Comes Alive! Video

Chemistry Comes Alive! uses QuickTime and requires QuickTime version 5 or later and the QuickTime plug-in in order to view the video.

You can download the latest version of QuickTime from the Apple Computer, Inc. WWW site.

Home > JCE Software > Chemistry Comes Alive! > Sample Movies > Electrolysis of Water

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Examples

The following JCE Software publications provide outstanding examples of the use of JCE video.

ChemPages Laboratory
Multimedia Problems
Periodic Table Live!
Solid State Resources
Gen. Chem. Collection


Comments to jceonline@chem.wisc.edu	Copyright © 2003 Division of Chemical Education, Inc., American Chemical Society. All rights reserved.