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Chapter 3

Chapter 3 Acids and Bases.docx

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Department
Chemistry
Course
CHEM 2OA3
Professor
Harald Stover
Semester
Fall

Description
1Chapter 3 Acids and BasesBernard HoOctober 7 201131 Introduction to BronstedLowry Acids and BasesDefinition of BronstedLowry acids and bases is based on transfer of a protonAn acid is defined as a proton donor and a base is defined as a proton acceptorProducts of a proton transfer reaction are called conjugate acid and conjugate baseamphotericWater is can act as both an acid and a base32 Flow of Electron Density CurvedArrow NotationAll reactions are accomplished via a flow of electron density which is illustrated with curved arrowsDiffer from resonance structuresoWhen drawing resonance structures curved arrows are used simply as tools and do not represent any real physical processoIn acidbase reactions curved arrows represent an actual physical processArrows show reaction mechanismNote that mechanism of a proton transfer reaction involves electrons from a base deprotonating an acidAcids do not lose protons without help of a base33 BronstedLowry Acidity Quantitative PerspectiveUsing pKa Values to Compare AcidityoGiven the general acidbase equationHAHOAHO23
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