| Journal Articles: 40 results |
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Prussian Blue: Artists' Pigment and Chemists' Sponge Mike 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.
Applications of Chemistry |
Coordination Compounds |
Dyes / Pigments |
Electrochemistry |
Oxidation / Reduction |
Photochemistry |
Toxicology
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Mercury Beating Heart: Modifications to the Classical Demonstration Metodija Najdoski, Valentin Mirceski, Vladimir M. Petruševski, and Sani Demiri
The classic mercury beating heart demonstration is modified with various electrolytes.
Najdoski, Metodija; Mirceski, Valentin; Petruševski, Vladimir M.; Demiri, Sani. J. Chem. Educ. 2007, 84, 1292.
Electrochemistry |
Oxidation / Reduction |
Surface Science
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Procedure for Decomposing a Redox Reaction into Half-Reactions Ilie Fishtik and Ladislav H. Berka
The principle of stoichiometric uniqueness provides a simple algorithm to check whether a simple redox reaction may be uniquely decomposed into half-reactions in a single way. For complex redox reactions the approach permits a complete enumeration of a finite and unique number of ways a redox reaction may be decomposed into half-reactions. Several examples are given.
Fishtik, Ilie; Berka, Ladislav H. J. Chem. Educ. 2005, 82, 553.
Stoichiometry |
Equilibrium |
Electrochemistry |
Oxidation / Reduction |
Reactions |
Thermodynamics
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Copper Metal from Malachite circa 4000 B.C.E. Gordon T. Yee, Jeannine E. Eddleton, and Cris E. Johnson
The experiment starts with a naturally occurring ore, malachite, essentially pure Cu2CO3(OH)2, which is readily available at modest cost in bead form from jewelry stores. Using only a Bunsen burner, a porcelain crucible, and a charcoal briquette, the experiment demonstrates two steps in the ancient processing of copper ore: roasting and reduction. The product is a shiny copper metal bead that can then be hammered, polished, and shown to be electrically conductive.
Yee, Gordon T.; Eddleton, Jeannine E.; Johnson, Cris E. J. Chem. Educ. 2004, 81, 1777.
Metals |
Oxidation / Reduction |
Solids
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A Copper-Sulfate-Based Inorganic Chemistry Laboratory for First-Year University Students That Teaches Basic Operations and Concepts Emilio Rodríguez and Miguel Angel Vicente
A 10-hour integrated experiment that covers all the inorganic chemistry topics in first-year chemistry and chemical engineering courses.
Rodríguez, Emilio; Vicente, Miguel Angel. J. Chem. Educ. 2002, 79, 486.
Oxidation / Reduction |
Solutions / Solvents
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Redox Redux: Recommendations for Improving Textbook and IUPAC Definitions Ed Vitz
Defining oxidation / reduction reactions as those in which oxidation states of the reactant(s) change.
Vitz, Ed. J. Chem. Educ. 2002, 79, 397.
Electrochemistry |
Mechanisms of Reactions |
Oxidation / Reduction |
Oxidation State
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Just Breathe: The Oxygen Content of Air JCE Editorial Staff
Students estimate the percent oxygen (volume) in air using steel wool in a test tube that is inverted in a beaker of water. Oxygen in the trapped air reacts with iron to form rust, and the water level rises inside the test tube; within 30-45 minutes, the majority of oxygen is consumed.
JCE Editorial Staff. J. Chem. Educ. 2001, 78, 512A.
Electrochemistry |
Gases |
Oxidation / Reduction
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Ascorbic Acid as a Standard for Iodometric Titrations: An Analytical Experiment for General Chemistry Cesar R. Silva, Jose A. Simoni, Carol H. Collins, and Pedro L. O. Volpe
Ascorbic acid is suggested as the weighable compound for the standardization of iodine solutions in an analytical experiment in general chemistry. The experiment involves an iodometric titration in which iodine reacts with ascorbic acid, oxidizing it to dehydroascorbic acid.
Silva, Cesar R.; Simoni, Jose A.; Collins, Carol H.; Volpe, Pedro L. O. J. Chem. Educ. 1999, 76, 1421.
Oxidation / Reduction |
Quantitative Analysis |
Titration / Volumetric Analysis |
Acids / Bases
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A Simple, Safe Way To Prepare Halogens and Study Their Visual Properties at a Technical Secondary School Domingo A. Liprandi, Orlando R. Reinheimer, José F. Paredes, and Pablo C. L'Argentière
In this paper we propose an easy-to-build apparatus to obtain chlorine, bromine, and iodine. The experiment was developed considering not only theoretical and safety conditions but simplicity and clarity as well.
Liprandi, Domingo A.; Reinheimer, Orlando R.; Paredes, José F.; L'Argentière, Pablo C. J. Chem. Educ. 1999, 76, 532.
Oxidation / Reduction |
Aqueous Solution Chemistry
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Sugar Dehydration without Sulfuric Acid: No More Choking Fumes in the Classroom! Todd P. Silverstein and Yi Zhang
Our demonstration uses no sulfuric acid, yields relatively little smoke, and produces an exciting and unpredictable growing column of black carbon.
Silverstein, Todd P.; Zhang, Yi. J. Chem. Educ. 1998, 75, 748.
Carbohydrates |
Thermodynamics |
Electrochemistry |
Solid State Chemistry |
Oxidation / Reduction
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"Mud" +" Blood" - A Very Colorful Demonstration Gordon F. Hambly
The preparation of "blood" and "mud" solutions is given to show that when combined the mixture solutions goes from a mud-color to colorless.
Hambly, Gordon F. J. Chem. Educ. 1998, 75, 56.
Oxidation / Reduction
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Letter to the Editor about Letter to the Editor "Redox Challenges" from David M. Hart and Response from Roland Stout (J. Chem. Educ. 1996, 73, A226-7) Andrzej Sobkowiak
Examples of a variety of redox equations.
Sobkowiak, Andrzej. J. Chem. Educ. 1997, 74, 1256.
Stoichiometry |
Reactions |
Oxidation / Reduction
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An Analysis of the Algebraic Method for Balancing Chemical Reactions John A. Olson
A new aspect of this treatment is the mathematical formulation of a third condition involving a balance between oxidation and reduction. The treatment begins with the three general conditions that a balanced chemical reaction must satisfy. These conditions are then expressed in mathematical form that enables the stoichiometric coefficients to be determined.
Olson, John A. . J. Chem. Educ. 1997, 74, 538.
Oxidation / Reduction |
Stoichiometry
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Double Disproportionations M.E. Cardinali, C. Giomini, Ciancarlo Marrosu
Method for balancing a difficult redox reaction.
Cardinali, Mario E.; Giomini, Claudio; Marrosu, Giancarlo. J. Chem. Educ. 1995, 72, 716.
Stoichiometry |
Oxidation / Reduction
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A Handy Reagent for Testing the Reducing Power of Sugars Sandell, Arvid
Using the reduction of copper(II) as a semi-quantitative test for reducing sugars.
Sandell, Arvid J. Chem. Educ. 1994, 71, 346.
Carbohydrates |
Oxidation / Reduction |
Coordination Compounds
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Pyrotechnic Reactions Without Oxygen Wright, Stephen W.
Reaction of K3FeF6 with Al and poly(tetrafluoroethylene) with Mg.
Wright, Stephen W. J. Chem. Educ. 1994, 71, 251.
Oxidation / Reduction |
Reactions
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Frost diagrams: A tool for predicting redox reactions. Birk, James P.; Hocker, Heidi.
A HyperCard stack that provides an easily used format for making redox reaction predictions for one or two elements by comparing slopes of the lines connecting two oxidation states.
Birk, James P.; Hocker, Heidi. J. Chem. Educ. 1992, 69, 509.
Oxidation / Reduction |
Oxidation State
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Algorithm for plotting titration curves (author response). Rodrigues de Moura, Daniel.
Our model, contrary to Jackman's statement, can be applied to redox systems that are pH-dependant.
Rodrigues de Moura, Daniel. J. Chem. Educ. 1992, 69, 257.
pH |
Oxidation / Reduction |
Titration / Volumetric Analysis
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Redox demonstrations and descriptive chemistry: Part 3. Copper (I)-copper(II) equilibria Ophardt, Charles E.
The unusual redox properties of copper (I) and copper (II) ions explained and illustrated.
Ophardt, Charles E. J. Chem. Educ. 1991, 68, 248.
Descriptive Chemistry |
Oxidation State |
Oxidation / Reduction
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REDOX: A Tutorial on REDuction/Oxidation Equations Davenport, Derek A.; Groves, Paul; Jensen, Dale L.
This suite of programs provides a computer-based tutorial on the subjects of oxidation numbers and balancing redox equations.
Davenport, Derek A.; Groves, Paul; Jensen, Dale L. J. Chem. Educ. 1990, 67, 498.
Oxidation / Reduction |
Enrichment / Review Materials
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Redox reactions and the electropotential axis Vella, Alfred J.
An introductory discussion should not get bogged down with the problems of representing cells by standard cell diagrams and notations and instead should concentrate on the chemistry of galvanic cells and the use of these cells in describing the concepts of redox chemistry.
Vella, Alfred J. J. Chem. Educ. 1990, 67, 479.
Oxidation / Reduction |
Electrolytic / Galvanic Cells / Potentials |
Electrochemistry
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Oxidation-reduction in blood analysis: Demonstrating the reaction in a Breathalyzer Anderson, John M.
The principle of a Breathalyzer involves the oxidation of alcohol in expired breath by a solution of potassium dichromate.
Anderson, John M. J. Chem. Educ. 1990, 67, 263.
Applications of Chemistry |
Oxidation / Reduction
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Chemically induced pulsations of interfaces: The mercury beating heart Avnir, David
When an iron needle just touches a mercury drop submerged in a pool of an acidic solution of an oxidizer, it pulsates rapidly in a mode that resembles a beating heart.
Avnir, David J. Chem. Educ. 1989, 66, 211.
Oxidation / Reduction
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Oxidation numbers and their limitations Woolf, A. A.
An in-depth look at oxidation numbers of various elements in a number of different compounds.
Woolf, A. A. J. Chem. Educ. 1988, 65, 45.
Organometallics |
Oxidation State |
Oxidation / Reduction
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Redox demonstrations and descriptive chemistry: Part 1. Metals Ophardt, Charles E.
The oxidation states of iron, tin, and mercury.
Ophardt, Charles E. J. Chem. Educ. 1987, 64, 716.
Metals |
Descriptive Chemistry |
Oxidation / Reduction |
Oxidation State
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Annotating reaction equations Tykodi, R. J.
Annotating aqueous solution reactions fosters recognition of the fundamental reaction categories; ready recognition of a reaction type is the first step toward understanding the "whys and wherefores" inherent in the reaction.
Tykodi, R. J. J. Chem. Educ. 1987, 64, 243.
Aqueous Solution Chemistry |
Reactions |
Acids / Bases |
Gases |
Precipitation / Solubility |
Oxidation / Reduction
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Electrochemical errors DeLorenzo, Ron
Ten examples of the unexpected consequences that have resulted from ignorance regarding electrochemistry.
DeLorenzo, Ron J. Chem. Educ. 1985, 62, 424.
Electrochemistry |
Consumer Chemistry |
Applications of Chemistry |
Oxidation / Reduction
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Iodine clock reaction mechanisms Lambert, Jack L.; Fina, Gary T.
Outlines the mechanism for the simple iodine clock reaction and the "Old Nassau" modification.
Lambert, Jack L.; Fina, Gary T. J. Chem. Educ. 1984, 61, 1037.
Mechanisms of Reactions |
Reactions |
Kinetics |
Oxidation / Reduction
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Oxidation and reduction White, Alvan D.
A simple visual analogy of oxidation and reduction.
White, Alvan D. J. Chem. Educ. 1981, 58, 645.
Oxidation / Reduction
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More on balancing redox equations Kolb, Doris
Balancing atypical redox equations.
Kolb, Doris J. Chem. Educ. 1979, 56, 181.
Stoichiometry |
Oxidation / Reduction
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The chemical equation. Part II: Oxidation-reduction reactions Kolb, Doris
Oxidation has come to have a much broader meaning than its original iteration.
Kolb, Doris J. Chem. Educ. 1978, 55, 326.
Oxidation / Reduction
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Singlet oxygen in aqueous solution: A lecture demonstration Shakhashiri, Bassam Z.; Williams, Lloyd G.
Lecture demonstrations involving chemiluminescence are useful for the purpose both of displaying chemical phenomena and of illustrating specific principles.
Shakhashiri, Bassam Z.; Williams, Lloyd G. J. Chem. Educ. 1976, 53, 358.
Photochemistry |
Reactions |
Oxidation / Reduction |
Spectroscopy
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Raku: A redox experiment in glass Cichowski, Robert S.
In this experiment, students are given the opportunity to handle a glass making process, choosing a colorant and exploring possible reduction-oxidation reactions involving the colorant.
Cichowski, Robert S. J. Chem. Educ. 1975, 52, 616.
Oxidation / Reduction |
Applications of Chemistry
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The lion roars: Rebuttals to "what is oxidation?" Schug, Kenneth; Koellner, John; Loveridge, Glen; Janke, James A.
Replies to the suggestion that oxidation and reduction be defined in terms of oxidation numbers.
Schug, Kenneth; Koellner, John; Loveridge, Glen; Janke, James A. J. Chem. Educ. 1975, 52, 602.
Oxidation / Reduction |
Oxidation State
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What is oxidation? Herron, J. Dudley
Why do most teachers continue to define oxidation and reduction in terms of a gain and loss of electrons rather than in terms of a change in oxidation number? [Debut]
Herron, J. Dudley J. Chem. Educ. 1975, 52, 51.
Oxidation / Reduction |
Oxidation / Reduction |
Atomic Properties / Structure |
Reactions
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Conjugate acid-base and redox theory Pacer, Richard A.
Consideration of relative oxidizing / reducing strength would be greatly facilitated if this topic were presented in terms of transfer of one or more electrons between members of a conjugate redox pair.
Pacer, Richard A. J. Chem. Educ. 1973, 50, 178.
Acids / Bases |
Oxidation / Reduction
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Interpretation of oxidation-reduction Goodstein, Madeline P.
Presents an interpretation of the oxidation number system based upon the electronegativity principle, thus removing the adjective "arbitrary" frequently found in the descriptions of oxidation number.
Goodstein, Madeline P. J. Chem. Educ. 1970, 47, 452.
Oxidation / Reduction |
Oxidation State |
Atomic Properties / Structure |
Reactions
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Redox revisited Lockwood, Karl L.
Examines issues regarding instruction in oxidation-reduction chemistry.
Lockwood, Karl L. J. Chem. Educ. 1961, 38, 326.
Oxidation / Reduction |
Oxidation State |
Stoichiometry
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Otis Coe Johnson and redox equations Bennett, George W.
It is the purpose of this paper to point out what is basic verity and what is empiricism in Johnson's method for balancing oxidation-reduction equations.
Bennett, George W. J. Chem. Educ. 1954, 31, 157.
Oxidation / Reduction |
Oxidation State |
Stoichiometry
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Oxidation number in auto-redox reactions Eblin, Lawrence P.
Examines the use of oxidation numbers in exploring the chemistry of auto-redox reactions.
Eblin, Lawrence P. J. Chem. Educ. 1951, 28, 221.
Oxidation State |
Oxidation / Reduction
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