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Reactions, Microscale: Precipitation Here we show two precipitation reactions under a microscope. They are potassium dichromate crystal with silver nitrate and potassium iodide with lead nitrate.
Precipitation / Solubility |
Reactions
Reaction, Microscale: Potassium Dichromate with Silver Nitrate A crystal of potassium dichromate is carefully combined with a solution of silver nitrate under a microscope. The reaction takes some time, so it is shown in a series of seven sequential videos. To see the entire reaction you need to play all seven.
The Electrochemical Synthesis of Transition-Metal AcetylacetonatesS. R. Long, S. R. Browning, and J. J. Lagowski The electrochemical synthesis of transition-metal acetylacetonates can assist in the transformation of an entry-level laboratory course into a research-like environment where all members of a class are working on the same problem, but each student has a personal responsibility for the synthesis and characterization of a specific compound. Long, S. R.; Browning, S. R.; Lagowski, J. J. J. Chem. Educ.2008, 85, 1429.
Coordination Compounds |
Electrochemistry |
IR Spectroscopy |
Physical Properties |
Synthesis |
Transition Elements |
UV-Vis Spectroscopy
Data Pooling in a Chemical Kinetics Experiment: The Aquation of a Series of Cobalt(III) ComplexesRichard S. Herrick, Kenneth V. Mills, and Lisa P. Nestor Describes an experiment that introduces students to integrated rate laws, the search for a mechanism that is consistent with chemical and kinetic data, and the concept of activation barriers and their measurement in a curriculum whose pedagogical philosophy makes the laboratory the center of learning for undergraduates in their first two years of instruction. Herrick, Richard S.; Mills, Kenneth V.; Nestor, Lisa P. J. Chem. Educ.2008, 85, 1120.
Coordination Compounds |
Kinetics |
Mechanisms of Reactions |
Rate Law |
UV-Vis Spectroscopy
Prussian Blue: Artists' Pigment and Chemists' SpongeMike Ware The variable composition of Prussian blue tantalized chemists until investigations by X-ray crystallography in the late 20th century explained its many properties and uses. Ware, Mike. J. Chem. Educ.2008, 85, 612.