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Reactions : AcidBaseRxns (20 Variations) In order to answer the following questions, write the net ionic equation for the reaction between equal volumes of 0.10 M solutions of the following acid and base:
KOH(aq) + HBr(aq)
What are the reaction products? Does the reaction yield an acidic, basic, or neutral aqueous solution?
A 25.0 mL aliquot of a 1.44M solution of ammonia (Kb = 1.8 x 10-5) is titrated with 1.50M HCl. Use the Indicator Table below to decide which of the indicators listed would most accurately signal the equivalence point for this titration.
Write the letter corresponding to your choice of indicator in the box.
Colorful Chemical FountainsNicholas C. Thomas and Stephen Faulk A chemical fountain, constructed from several vertically stacked plastic champagne cups, is used to demonstrate acidbase and chemiluminescence reactions. Thomas, Nicholas C.; Faulk, Stephen. J. Chem. Educ.2008, 85, 1061.
Acids / Bases |
Dyes / Pigments |
Physical Properties |
Reactions
The Chemical Adventures of Sherlock Holmes: The Serpentine RemainsKen Shaw This story is a chemical mystery, set in the context of Sherlock Holmes and Dr. Watson, that emphasizes qualitative analysis, descriptive chemistry, and forensics. Shaw, Ken. J. Chem. Educ.2008, 85, 507.
Acids / Bases |
Applications of Chemistry |
Coordination Compounds |
Calorimetry / Thermochemistry |
Forensic Chemistry |
Qualitative Analysis
How Does Your Laundry Glow?Richard B. Weinberg This activity examines the effect of pH on the fluorescence properties of the optical brighteners in liquid laundry detergent. Students conduct acid titrations in the presence and absence of a buffer to determine the pH of the fluorescence color transition. Weinberg, Richard B. J. Chem. Educ.2007, 84, 800A.
Acids & Bases A collection of activities that explore basic concepts dealing with acids and bases. They are written for the 4-6th grade level.
Acids / Bases
Universal Indicator Rainbow This hands-on activity, which is part of the ACS-Science for Kids collection, explores a simple acid/base indicator. Students use household solutions of acid and base to change the color of the indicator.
Acids / Bases
A Gas Sudsation In this investigation, students add some soap solution to an empty bottle. They add some baking soda and vinegar. A chemical reaction between the vinegar and the baking soda produces carbon dioxide gas. The interaction between the gas and the detergent creates bubbles. These bubbles have more staying power than the bubbles created by just vinegar and baking soda. With the right amount of each ingredient, students should be able to control the reaction and get the amount of bubbling they are looking for.
