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Precipitation Reactions Two versions of the Orange Tornado, two reactions under a microscope, and updated stills of other precipitation reactions provide dramatic visual displays of solid formation.
Equilibrium |
Precipitation / Solubility |
Reactions
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
Precipitation Reactions Approximately 2 mL of Solution A is added to a sample of Solution B with a dropping pipet. If a precipitate forms, the resulting precipitate is supended in the mixture. The mixture is then stirred with a glass stirring rod and the precipitate is allowed to settle for about a minute.
Reactions : IDSampleRxnVideo (7 Variations) You have an unknown aqueous sample. You add aqueous copper(II) sulfate to the sample. View the video below and determine which of the compounds listed below could be your sample.
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
Determining the Solubility Product of Fe(OH)3: An Equilibrium Study with Environmental SignificanceMichelle Meighan, Joseph MacNeil, and Renee Falconer This study explores the environmental impact of acidic mine drainage by investigating the relationship between pH and the aqueous solubility of heavy metals. Students precipitate Fe(OH)3 from acidic FeCl3 and NaOH and use the concentrations of ferric and hydroxide ionsdetermined through pH and flame spectroscopyto calculate the Ksp of Fe(OH)3. Meighan, Michelle; MacNeil, Joseph; Falconer, Renee. J. Chem. Educ.2008, 85, 254.
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium |
Precipitation / Solubility |
Spectroscopy
Solubility Rules: Three Suggestions for Improved UnderstandingBob Blake Many general chemistry textbooks have errors or omissions in their rules for predicting solubility that the author highlights and attempts to correct. In addition, it is proposed that the following changes be made to the discussion of solubility so that students and teachers can have a greater understanding of solubility. Blake, Bob. J. Chem. Educ.2003, 80, 1348.
Precipitation ReactionsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility
Solubility and Molecular StructureEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
