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Denaturation of Protein by Strong AcidJohn W. Moore, Jerrold J. Jacobsen, Gary Trammell, Kristin Johnson "Strong acid denatures egg white proteins.This video contains voiceover:""The tertiary structure of egg white proteins is held together by hydrogen bonding and hydrophobic interactions. Adding strong acid to the protein disrupts the intermolecular forces, and the tertiary structure is lost. The loss in protein structure is called denaturation. The proteins precipitate, forming a white solid."""
Extraction of Acid with Base Water and diethyl ether are shaken in a separatory funnel with a small amount of red indophenol. The non-ionic indophenol remains in the ether layer, coloring it red. Addition of sodium hydroxide converts the indophenol to its blue ionic acid anion which is extracted into the water layer turning it blue.
The Glyoxal Clock ReactionJulie B. Ealy, Alexandra Rodriguez Negron, Jessica Stephens, Rebecca Stauffer, and Stanley D. Furrow The glyoxal clock reaction has been adapted to a general chemistry kinetics lab to determine the order of the reacting species using a Calculator Based Laboratory or LabPro equipment. Ealy, Julie B.; Negron, Alexandra Rodriguez; Stephens, Jessica; Stauffer, Rebecca; Furrow, Stanley D. J. Chem. Educ.2007, 84, 1965.
Aldehydes / Ketones |
Dyes / Pigments |
Kinetics |
Lewis Acids / Bases |
Mechanisms of Reactions |
Rate Law |
Reactions
Concerning Lewis Acid–Base Theory for Proton TransferLawrence J. Sacks Counterpoint commentary in response to a suggestion that the Lewis acidbase approach be applied to reactions such as ammoniawater and HClwater. Sacks, Lawrence J. J. Chem. Educ.2007, 84, 1415.
Acids / Bases |
Lewis Acids / Bases |
Theoretical Chemistry |
Brønsted-Lowry Acids / Bases
Let Us Give Lewis Acid–Base Theory the Priority It DeservesAlan A. Shaffer The Lewis concept is simple yet powerful in its scope, and can be used to help beginning students understand reaction mechanisms more fully. However, traditional approaches to acid-base reactions at the introductory level ignores Lewis acid-base theory completely, focusing instead on proton transfer described by the Br?nsted-Lowry concept. Shaffer, Alan A. J. Chem. Educ.2006, 83, 1746.
Lewis Acids and BasesEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Lewis Acids / Bases
ChemPaths 104 F Apr 15John W. Moore Today in Chem 104:
* Lecture: Titration; Lewis Acids and Bases
* Reading:
Kotz: Ch. 18, Sec. 3; Ch. 17, Sec. 9
Moore: Ch. 17, Sec. 2; Ch. 16, Sec.
* Homework #10 due by 11:55 PM tonight
Lewis Acids / Bases |
Titration / Volumetric Analysis
Acids (GCMP)David M. Whisnant Acids: this is a resource in the collection "General Chemistry Multimedia Problems". We will observe the reaction of sodium bicarbonate with three acid solutions. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
