| Journal Articles: 46 results |
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Does the Addition of Inert Gases at Constant Volume and Temperature Affect Chemical Equilibrium? João C. M. Paiva, Jorge Gonçalves, and Susana Fonseca
This article examines three approaches, leading to different conclusions, for answering the question "Does the addition of inert gases at constant volume and temperature modify the state of equilibrium?"
Paiva, João C. M.; Gonçalves, Jorge; Fonseca, Susana. J. Chem. Educ. 2008, 85, 1133.
Equilibrium |
Gases |
Thermodynamics
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How Many Atomic Layers of Zinc Are in a Galvanized Iron Coating? Shui-Ping Yang
This article describes a guided inquiry and problem solving experiment in which students use a novel gasometric assembly to determine the thickness and number of atomic layers of zinc coating on galvanized iron wires and nails.
Yang, Shui-Ping. J. Chem. Educ. 2007, 84, 1792.
Aqueous Solution Chemistry |
Consumer Chemistry |
Electrochemistry |
Gases |
Laboratory Equipment / Apparatus |
Quantitative Analysis |
Rate Law
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Gas Clathrate Hydrates Experiment for High School Projects and Undergraduate Laboratories Melissa P. Prado, Annie Pham, Robert E. Ferazzi, Kimberly Edwards, and Kenneth C. Janda
Presents a procedure for preparing and studying propane clathrate hydrate. This experiment introduces students to this unusual solid while stimulating a discussion of the interplay of intermolecular forces, thermodynamics, and solid structure.
Prado, Melissa P.; Pham, Annie; Ferazzi, Robert E.; Edwards, Kimberly; Janda, Kenneth C. J. Chem. Educ. 2007, 84, 1790.
Alkanes / Cycloalkanes |
Applications of Chemistry |
Calorimetry / Thermochemistry |
Gases |
Phases / Phase Transitions / Diagrams |
Thermodynamics |
Water / Water Chemistry |
Hydrogen Bonding
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Job's Analysis of the Range of the "Dalton Syringe Rocket" Natalie Barto, Brandon Henrie, and Ed Vitz
An apparatus for safely igniting fuel gas/oxygen mixtures in a syringe and measuring the distance that the syringe is propelled is presented. The distance (range) is analyzed by the method of continuous variation (Job's Method) to determine the stoichiometry of the reaction.
Barto, Natalie; Henrie, Brandon; Vitz, Ed. J. Chem. Educ. 2006, 83, 1505.
Gases |
Oxidation / Reduction |
Thermodynamics |
Stoichiometry
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Two "Gas-in-a-Bag" Reactions To Show the Predictive Power of the Relative AcidBase Strength Chart Brett Criswell
Describes a demonstration in which two different pairs of solid chemicals mixed in two different Ziploc bags in the presence of a small quantities of water react to produce gases. Students are informed that the reactions are BrnstedLowry acidbase type reactions and must determine which member in each pair will act as the acid and which as the base.
Criswell, Brett. J. Chem. Educ. 2006, 83, 1167.
Acids / Bases |
Aqueous Solution Chemistry |
Descriptive Chemistry |
Gases |
Reactions |
Brønsted-Lowry Acids / Bases
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Achieving Chemical Equilibrium: The Role of Imposed Conditions in the Ammonia Formation Reaction Joel Tellinghuisen
The conditions under which chemical reactions occur determine which thermodynamic functions are minimized or maximized. This point is illustrated for the formation of ammonia in the ideal gas approximation using a numerical exercise.
Tellinghuisen, Joel. J. Chem. Educ. 2006, 83, 1090.
Gases |
Equilibrium |
Thermodynamics
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Theoretical Insights for Practical Handling of Pressurized Fluids Alfonso Aranda and María del Prado Rodríguez
Introduces the basic considerations for managing pressurized fluids, mainly liquefied and compressed gases.
Aranda, Alfonso; Rodríguez, María del Prado. J. Chem. Educ. 2006, 83, 93.
Applications of Chemistry |
Gases |
Phases / Phase Transitions / Diagrams |
Thermodynamics
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A Note on Dalton's Law: Myths, Facts, and Implementation Ronald W. Missen and William R. Smith
The treatment of Dalton's law for gas mixtures commonly includes the improper designation "Dalton's law of partial pressures", rather than the correct "Dalton's law of additivity of (pure component) pressures". It also identifies the pure component pressure as the partial pressure, although these are only numerically equal for a mixture of ideal gases. The situation is clarified by examination of an appropriate statement of the law and definitions, eventually in operational form with reference to mixtures of nonideal gases.
Missen, Ronald Wi.; Smith, William R. J. Chem. Educ. 2005, 82, 1197.
Thermodynamics |
Gases
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Entropy Is Simple, Qualitatively Frank L. Lambert
Explanation of entropy in terms of energy dispersal; includes considerations of fusion and vaporization, expanding gasses and mixing fluids, colligative properties, and the Gibbs function.
Lambert, Frank L. J. Chem. Educ. 2002, 79, 1241.
Thermodynamics |
Phases / Phase Transitions / Diagrams |
Gases
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Unknown Gases: Student-Designed Experiments in the Introductory Laboratory John Hanson and Tim Hoyt
Investigation in which students must determine the identity of three unknown gases by developing their own tests.
Hanson, John; Hoyt, Tim. J. Chem. Educ. 2002, 79, 845.
Gases |
Qualitative Analysis |
Physical Properties
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An Alcohol Rocket Car--A Variation on the "Whoosh Bottle" Theme Dean J. Campbell
Burning methanol in a wheeled milk jug.
Campbell, Dean J. J. Chem. Educ. 2001, 78, 910.
Gases |
Thermodynamics
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Laboratory Experiments on Electrochemical Remediation of the Environment. Part 5: Indirect H2S Remediation J. G. Ibanez
Experiment to introduce students in general chemistry, environmental chemistry, or electrochemistry to the concept of indirect electrolysis, its application in environmental remediation schemes, the role of a mediator, and the application of redox chemistry concepts.
Ibanez, J. G. J. Chem. Educ. 2001, 78, 778.
Electrochemistry |
Gases |
Microscale Lab |
Oxidation / Reduction |
Applications of Chemistry
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A Novel Experiment for Fast and Simple Determination of the Oxygen Content in the Air Metodija Najdoski and Vladimir M. Petrusevski
The reaction between nitric oxide (NO) and oxygen is used for determination of the oxygen content in the air. The nitrogen dioxide thus produced is dissolved in water. The volume decrease of the gas enables quick and accurate enough determination of the O2 content. The results of 20 measurements give %O2 = 21.04 0.63.
Najdoski, Metodija; Petrusevski, Vladimir M. J. Chem. Educ. 2000, 77, 1447.
Gases |
Qualitative Analysis |
Quantitative Analysis |
Atmospheric Chemistry
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Potentiometric Determination of CO2 Concentration in the Gaseous Phase: Applications in Different Laboratory Activities Eduardo Cortón, Santiago Kocmur, Liliana Haim, and Lydia Galagovsky
The first lab comprises the calibration of a CO2 potentiometric detector with gas mixtures. The CO2 and CO2-free air required for the gaseous samples are produced in the lab by an inexpensive and simple apparatus. In the second lab, the CO2 potentiometric device is used to measure CO2 uptake and release during different metabolic processes.
Cortón, Eduardo; Kocmur, Santiago; Haim, Liliana; Galagovsky, Lydia. J. Chem. Educ. 2000, 77, 1188.
Electrochemistry |
Gases |
Quantitative Analysis |
Metabolism
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A Precise Method for Determining the CO2 Content of Carbonate Materials Donald L. Pile, Alana S. Benjamin, Klaus S. Lackner, Christopher H. Wendt, and Darryl P. Butt
The design and use of a buret apparatus for CO2 gas capture and mass determination are described. The derivation of a comprehensive equation to determine the CO2 mass and percent carbonation of the material is outlined. Experimental factors such as temperature and pressure, including elevation effects, and apparatus parameters are discussed and incorporated into one general equation.
Pile, Donald L.; Benjamin, Alana S.; Lackner, Klaus S.; Wendt, Christopher H.; Butt, Darryl P. J. Chem. Educ. 1998, 75, 1610.
Laboratory Equipment / Apparatus |
Gases |
Quantitative Analysis
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Chemistry in the Public Domain (the author replies) Toby, Sidney
Mixtures of ammonia-air can be explosive.
Toby, Sidney J. Chem. Educ. 1998, 75, 1087.
Gases
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Chemistry in the Public Domain Odom, John L.
Mixtures of ammonia-air and methylene chloride-air can be explosive.
Odom, John L. J. Chem. Educ. 1998, 75, 1087.
Gases
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Kinetics Studies in a Washing Bottle John Teggins and Chris Mahaffy
The kinetics of the decomposition of hydrogen peroxide using iodide ion in aqueous solution is studied in sealed completely-filled washing bottles.
Teggins, John; Mahaffy, Chris. J. Chem. Educ. 1997, 74, 566.
Kinetics |
Aqueous Solution Chemistry |
Gases
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Small-Scale Experiments Involving Gas Evolution Brouwer, H.
Apparatus for measuring very small volume changes of gases and several experimental procedures involving the evolution of gases.
Brouwer, H. J. Chem. Educ. 1995, 72, A100.
Gases |
Laboratory Equipment / Apparatus |
Stoichiometry |
Acids / Bases |
Reactions |
Mechanisms of Reactions |
Microscale Lab
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Entertaining Chemistry John F. Elsworth
"A Volcanic Serpent" (ammonium dichromate), "A Homemade Hydrogen Rocket", and "Johnny's Saga in Chemistry" (sulfuric acid + calcium carbonate) demonstrations.
Elsworth, John F. J. Chem. Educ. 1995, 72, 1128.
Reactions |
Acids / Bases |
Gases
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The Environmental Chemistry of Trace Atmospheric Gases William C. Trogler
Information regarding the composition of trace gases in the Earth's atmosphere, changes in these amounts, their sources, and potential future impact on the environment.
Trogler, William C. J. Chem. Educ. 1995, 72, 973.
Gases |
Atmospheric Chemistry
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Experiments for Modern Introductory Chemistry: Intermolecular Forces and Raoult's Law Berka, Ladislav H.; Kildahl, Nicholas
Procedure that illustrates the liquid-vapor phase equilibrium of ideal and nonideal solutions.
Berka, Ladislav H.; Kildahl, Nicholas J. Chem. Educ. 1994, 71, 613.
Noncovalent Interactions |
Gas Chromatography |
Gases |
Liquids |
Equilibrium |
Solutions / Solvents
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A modern vapor pressure apparatus based on the isoteniscope. Van Hecke, Gerald R.
Equipment used for vapor pressure measurements that eliminates use of a mercury manometer.
Van Hecke, Gerald R. J. Chem. Educ. 1992, 69, 681.
Laboratory Equipment / Apparatus |
Gases |
Liquids
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Syringe gas generators Alyea, Hubert N.
Poisonous gases can be generated safely in a plastic syringe without their escaping into the classroom.
Alyea, Hubert N. J. Chem. Educ. 1992, 69, 65.
Gases
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Overhead projection of Graham's law of gaseous diffusion Epp, Dianne N.
Demonstration of gaseous diffusion through the combination of NH3 and HCl to produce NH4Cl.
Epp, Dianne N. J. Chem. Educ. 1990, 67, 1061.
Gases |
Transport Properties
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Questions from a can of Pepsi Mitchell, Tony
A can of Pepsi can be the starting point of countless chemistry questions that students can relate to. The author encourages other instructors to think about helping students understand chemistry as it relates to contemporary society.
Mitchell, Tony J. Chem. Educ. 1988, 65, 1070.
Consumer Chemistry |
Applications of Chemistry |
Stoichiometry |
Physical Properties |
Food Science |
Nutrition |
Gases |
Acids / Bases |
Metals
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Control of variables and the conservation of matter Giachino, Gary G.
Demonstrates the conservation of matter, but its main value lies in its illustration of the need to control variables and the difficulty this may entail - particularly if a variable is "hidden"; uses a burning candle in a glass flask.
Giachino, Gary G. J. Chem. Educ. 1987, 64, 353.
Gases
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Is volume conserved?: A first general chemistry experiment Olmsted, John, III.
The author presents an experiment that introduces students to scientific methodology, affords practice in the essential laboratory skill of management, and illustrates some fundamental chemical relationships without requiring any chemical sophistication.
Olmsted, John, III. J. Chem. Educ. 1986, 63, 538.
Gases
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Invisible water: A gas density demonstration Maciel, Richard P.
Demonstrating the density of 1,1,2-trichloro-1,2,2-trifluoroethane (TTE), whose density is about six times that of air.
Maciel, Richard P. J. Chem. Educ. 1985, 62, 153.
Gases |
Physical Properties
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Balloons and the teaching of chemistry Dewhurst, F.; Dewhurst, F. R.
Balloons are a remarkably useful tool for the chemical educationalist. Balloons can not only provide cheap, safe, and easy-to-use alternatives to more complex and costly equipment, but also they can be used as effective teaching aids to demonstrate principles of structural chemistry.
Dewhurst, F.; Dewhurst, F. R. J. Chem. Educ. 1981, 58, 44.
Gases |
Laboratory Equipment / Apparatus
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Lecture demonstration of vanishing meniscus in vapor liquid transition Duus, H. C.
Shows how the interface between vapor and liquid propane vanishes.
Duus, H. C. J. Chem. Educ. 1979, 56, 614.
Liquids |
Gases |
Phases / Phase Transitions / Diagrams
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Dissolved oxygen. A relevant experiment for the introductory laboratory Stagg, William R.
Students measure the dissolved oxygen content of water from several natural sources as well as the change in solubility with temperature.
Stagg, William R. J. Chem. Educ. 1972, 49, 427.
Water / Water Chemistry |
Oxidation / Reduction |
Quantitative Analysis |
Solutions / Solvents |
Precipitation / Solubility |
Gases
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The noble gases and the periodic table: Telling it like it was Wolfenden, John H.
It is instructive to discover that many great scientists have reported erroneous observations as well as mistaken interpretations of experimental data.
Wolfenden, John H. J. Chem. Educ. 1969, 46, 569.
Gases |
Periodicity / Periodic Table
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The range of validity of Graham's Laws Kirk, A. D.
It is the purpose of this article to discuss effusion, diffusion, and some related processes and to outline the range of validity of Graham's law.
Kirk, A. D. J. Chem. Educ. 1967, 44, 745.
Gases |
Transport Properties
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Analysis for nitrite by evolution of nitrogen: A general chemistry laboratory experiment Bartlett, J. Kenneth
This experiment involves analysis for the sodium nitrite content of a sodium nitrite-sodium chloride mixture by decomposition to nitrogen while heating in the presence of ammonium chloride solution.
Bartlett, J. Kenneth J. Chem. Educ. 1967, 44, 475.
Gases
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Teaching kinetic molecular theory by the factor change method Koons, Lawrence F.
Develops the "factor change method" for teaching kinetic molecular theory and presents examples of its application.
Koons, Lawrence F. J. Chem. Educ. 1967, 44, 288.
Kinetic-Molecular Theory |
Gases
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VII - Combustion and flame Anderson, Robbin C.
Presents and describes an extensive bibliography on the study of combustion and flames.
Anderson, Robbin C. J. Chem. Educ. 1967, 44, 248.
Oxidation / Reduction |
Reactions |
Gases
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Manometric apparatus for vapor and solution studies Taha, Ahmed A.; Grigsby, Ronald D.; Johnson, James R.; Christian, Sherril D.; Affsprung, Harold E.
Presents a device that can be sued to obtain vapor density and PVT measurements, vapor pressures of solutions and liquids, dew-point pressures and compositions, solubilities of gases in liquids, solubilities of slightly-miscible liquids, equilibrium constants for association reactions in solutions, interactions of vapors and gases with solids, and gas and vapor viscosities.
Taha, Ahmed A.; Grigsby, Ronald D.; Johnson, James R.; Christian, Sherril D.; Affsprung, Harold E. J. Chem. Educ. 1966, 43, 432.
Laboratory Equipment / Apparatus |
Physical Properties |
Solutions / Solvents |
Gases |
Liquids |
Solids
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IV - Isoelectronic systems Bent, Henry A.
A detailed consideration of the principles of isoelectric systems.
Bent, Henry A. J. Chem. Educ. 1966, 43, 170.
Gases |
Nonmetals |
Covalent Bonding
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Compressed gas cylinders and cylinder regulators used in laboratories Pinney, George
Presents safety guidelines regarding the use of compressed gas cylinders and cylinder regulators in laboratories.
Pinney, George J. Chem. Educ. 1965, 42, A976.
Laboratory Equipment / Apparatus |
Laboratory Management |
Gases
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"Compounds" (?) of the noble gases prior to 1962 Chernick, Cedric L.
Reviews past efforts to generate compounds of the noble gases.
Chernick, Cedric L. J. Chem. Educ. 1964, 41, 185.
Nonmetals |
Gases
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The chemistry of the noble gases Hyman, Herbert H.
Summarizes the chemistry of the noble gases and their bond-forming abilities.
Hyman, Herbert H. J. Chem. Educ. 1964, 41, 174.
Gases |
Main-Group Elements |
Covalent Bonding
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Demonstration notes: Oxygen in air Glanz, Joseph
Explains that the popular method of demonstrating the percentage volume of oxygen in air is fraut with errors.
Glanz, Joseph J. Chem. Educ. 1963, 40, A477.
Gases |
Atmospheric Chemistry
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Demonstration notes: Fog formation Benson, John E.
Suggests a modification to producing a cloud in a jar.
Benson, John E. J. Chem. Educ. 1963, 40, A477.
Gases |
Liquids |
Phases / Phase Transitions / Diagrams
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Letters to the editor Caughlan, Charles N.
Calls attention to another article suggesting the use of hypodermic syringes to verify Boyle's law.
Caughlan, Charles N. J. Chem. Educ. 1963, 40, 229.
Gases
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Hypodermic syringes in quantitative elementary chemistry experiments. Part 2. General chemistry experiments Davenport, Derek A.; Saba, Afif N.
Presents a variety of experiments that make use of hypodermic syringes in quantitative elementary chemistry.
Davenport, Derek A.; Saba, Afif N. J. Chem. Educ. 1962, 39, 617.
Laboratory Equipment / Apparatus |
Gases |
Liquids |
Reactions |
Equilibrium |
Stoichiometry
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