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Reactions : WillSolnConduct (5 Variations) One gram of each of the following compounds is mixed with 100mL of water. Which will form solutions that will conduct electricity?
The Correlation of Binary Acid Strengths with Molecular Properties in First-Year ChemistryTravis D. Fridgen This article replaces contradictory explanations for the strengths of different binary acids in first-year chemistry textbooks with a single explanation that uses a BornHaber cycle involving homolyic bond dissociation energies, electron affinities, and ion solvation enthalpies to rationalize trends in the strengths of all binary acids. Fridgen, Travis D. J. Chem. Educ.2008, 85, 1220.
Acids / Bases |
Atomic Properties / Structure |
Aqueous Solution Chemistry |
Physical Properties |
Thermodynamics
Investigating Students' Ability To Transfer Ideas Learned from Molecular Animations of the Dissolution ProcessResa M. Kelly and Loretta L. Jones This study examines what features of the particulate nature of matter learned from viewing two animations of sodium chloride dissolution students would transfer to their descriptions of the participation of aqueous sodium chloride in a chemical reaction. Kelly, Resa M.; Jones, Loretta L. J. Chem. Educ.2008, 85, 303.
Aqueous Solution Chemistry |
Precipitation / Solubility |
Solutions / Solvents |
Constructivism
Factors That Influence Relative Acid Strength in Water: A Simple ModelMichael J. Moran The pKa's of diverse aqueous acids HA correlate well with the sum of two gas-phase properties: the HA bond-dissociation enthalpy and the electron affinity of the A radical. It is suggested that rather than bond strength alone or bond polarity, the sum of the enthalpies of these two steps is a fairly good indicator of relative acidity. Moran, Michael J. J. Chem. Educ.2006, 83, 800.
Hydration of IonsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Aqueous Solution Chemistry
Hydrogen and Hydroxide IonsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Aqueous Solution Chemistry |
Water / Water Chemistry
Introduction of Aquatic Chemistry in General Chemistry Curriculum;Spreadsheet Calculation ApproachesChulsung Kim Fundamental aquatic chemistry concepts may be introduced in general chemistry classes by computing ionization fractions and buffer intensity of aqueous phase carbonate systems. This Excel spreadsheet may used to build graphic presentations of a titration curve, distribution diagram, and buffer intensity as a function of pH. Accompanying activities are designed to enhance the concepts of acid-base equilibrium through exploring the relationship between pKa/pKb, pH of the solution, ionization fractions, and buffer intensity, and to exercise students graphing skills.
