By T. J. Fletcher
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Beginning chemistry students can use this app to get a feel for conducting an acid-base titration and solving for unknown concentration.
Choose from a set of four strong acids and four strong bases. You'll be using Bromothymol Blue for your indicator...that's blue in basic - yellow in acidic. Rotate the lever to control the flow from the burette and you'll be titrating in no time.
Press "Reset" to run another trial using the same solutions and concentrations.
Determine the volume of standard solution (in the burette) needed to reach the equivalence point. Then, use the information to calculate the unknown concentration (in the flask). Press "Solve" to check your answer.
Practice mode allows you to see the pH of the solution as you titrate. Challenge mode relies solely on the color change to determine equivalence point.
Check out the website for examples.
This app is great! I use it with my first year chemistry students to introduce them to the basic concepts. They can get the idea of running a quick titration to approximate where the endpoint will be, and then a more careful trial to really nail it. I like the choices of strong acids and bases as the are common in the laboratory and allow the beginning student to see the different mole ratios that can exist (beyond the MaVa = MbVb). Excellent app and definitely recommend it to others.
Very cool it's like running a real titration. Some more types of acid base indictator would be cool
- Category: Education
- Released: Jul 30, 2009
- Version: 1.0
- Size: 0.3 MB
- Language: English
- Seller: Tj Fletcher
- © 2009 T. J. Fletcher
Compatibility: Requires iOS 2.1 or later. Compatible with iPhone, iPad, and iPod touch.