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A Copper-Sulfate-Based Inorganic Chemistry Laboratory for First-Year University Students That Teaches Basic Operations and Concepts
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Abstract
An integrated inorganic chemistry laboratory experiment for first-year students in Chemistry and Chemical Engineering is presented. It is based on copper sulfate and structured for a duration of about 10 hours, and has three steps: purification of a natural ore containing copper sulfate and insoluble basic copper sulfates, determination of the number of water molecules in hydrated copper sulfate, and recovery of metallic copper from copper sulfate. Many basic operations and concepts related to this experiment are studied: weighing; heating; filtration (simple and vacuum-assisted); purification; crystallization; pure compounds and mixtures; hydrated and anhydrous salts; solubility; unsaturated (dilute and concentrated), saturated, and supersaturated solutions; adsorbed and crystallization water; reversible dehydration; redox reaction; electrode potential; free energy; spontaneity; and catalysis.
Keywords (Audience):
First-Year Undergraduate / GeneralKeywords (Domain):
Inorganic ChemistryKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Oxidation / ReductionCiting Articles
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This article has been cited by 5 ACS Journal articles (5 most recent appear below).
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Edgardo L. Ortiz Nieves, Reizelie Barreto, and Zuleika MedinaJournal of Chemical Education2012 Article ASAPThis activity introduces students to the concept of reduction–oxidation (redox) reactions. To help students obtain a thorough understanding of redox reactions, the concept is explored at three levels: macroscopic, submicroscopic, and symbolic. In this ...
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Rebecca Barlag and Frazier NyasuluJournal of Chemical Education2011 88 (5), 643-645Waters of Hydration of Cupric Hydrates: A Comparison between Heating and Absorbance Methods
Rebecca Barlag and Frazier NyasuluJournal of Chemical Education2011 88 (5), 643-645The empirical formulas of four cupric hydrates are determined by measuring the absorbance in aqueous solution. The Beer−Lambert Law is verified by constructing a calibration curve of absorbance versus known Cu2+(aq) concentration. A solution of the ...
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Adam R. Johnson , Tyrel M. McQueen and Kit T. RodolfaJournal of Chemical Education2005 82 (3), 408The addition of aqueous ammonia to a dilute solution of copper sulfate leads to a complex series of coupled equilibria involving acid–base chemistry, precipitation, and complex ion formation. There are 12 chemical species that must be considered to solve ...
Copper Metal from Malachite circa 4000 B.C.E.
Cris E. Johnson , Gordon T. Yee and Jeannine E. EddletonJournal of Chemical Education2004 81 (12), 1777Copper Metal from Malachite circa 4000 B.C.E.
Cris E. Johnson , Gordon T. Yee and Jeannine E. EddletonJournal of Chemical Education2004 81 (12), 1777After the development of the field of ceramics, for Stone Age man, the smelting of copper might have represented the next designed chemical transformation of one substance into a more useful second substance. Around 6000 years ago the procedure involved ...
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- Received: August 03, 2009
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