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Sulfuric Acid into Water and Ice When sulfuric acid is mixed with water the temperature rises. When sulfuric acid is added to ice, the temperature rises at first, but as the ice melts, the temperature falls.
Calorimetry / Thermochemistry
Endothermic Reaction Solid barium hydroxide octahydrate (Ba(OH)2*8H2O) and ammonium thiocyanate (NH4SCN) are mixed in a beaker, which is then placed on a few drops of water on a small board. The reaction that occurs is highly endothermic.
Thermochemistry : HeatTransfers (10 Variations)
A red-hot piece of lead is dropped into water. Which of the following statements are true? (Assume that there are no energy transfers between anything except the lead and the water.)
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
Some Like It Hot, Some Like It ColdRobert G. Silberman Students combine liquids and solids in a calorimeter and use a thermometer to determine if the reaction mixture gets hotter or colder. The goal is to find a combination of a liquid and a solid that could serve as the basis for a cold pack of the type used for athletic injuries. Silberman, Robert G. J. Chem. Educ.2004, 81, 64A.
Calorimetry / Thermochemistry |
Microscale Lab
Visual Experiments Supporting Four Basic Concepts in ChemistryFrançois Saint-Antonin Demonstrations illustrating four principles of chemistry (dissolution, transport, reaction, and energy changes). Saint-Antonin, François. J. Chem. Educ.2003, 80, 288.
Calorimeter, Coffee Cup (ChemPages Lab)John W. Moore, Jerrold J. Jacobsen, Joe L. March Calorimeter, Coffee Cup: this is a resource in the collection "ChemPages Laboratory Resources". A coffee cup calorimeter is a useful, simple device that can be used to measure the temperature change that accompanies a reaction. A Styrofoam cup is used because it is a good insulator. The cup will absorb (or supply) negligible amounts of heat during most General Chemistry experiments. Thus, any change in temperature is assumed to be due only to the reaction, and the heat transferred in the reaction may be calculated. The ChemPages Laboratory Resources are a set of web pages that include text, images, video, and self check questions. The topics included are those that are commonly encountered in the first-year chemistry laboratory. They have been put together for use as both a pre-laboratory preparation tool and an in-laboratory reference source.
Laboratory Equipment / Apparatus |
Calorimetry / Thermochemistry
ChemPaths 104 F Mar 25John W. Moore Today in Chem 104:
* Lecture: Thermochemistry
* Reading:
Kotz: Review Ch. 5, Sec. 1-8
Moore: Review Ch. 6, Sec. 1-10
* Homework #8 due by 11:55 PM F Apr 1
* Quiz in second discussion section next week
