U4AcidBaseL1

U4AcidBaseL1 - Chemistry 12 Unit 4 Introduction(Post Lab Discussion Operational Definitions • Describe what acids or bases do… eg Bases turn

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Unformatted text preview: Chemistry 12 Unit 4 Introduction: (Post Lab Discussion) Operational Definitions: • Describe what acids or bases do… eg: Bases turn red litmus blue eg: Acids react with magnesium Conceptual Definitions: • Define acids or bases in terms of their molecular structure… eg: Acids contain H + eg: Bases contain OH- Arrhenius Definitions (Classic): Acid: A substance that produces H + in solution. Base: A substance that produces OH- in solution. Classic Neutralization Reaction: H 2 SO 4 (aq) + 2 NaOH (aq) Æ 2 H 2 O (l) + Na 2 SO 4 (aq) Acid Base Water Salt I. Characteristics: Acids: • Sour taste • React with metals (producing H 2 ) • Conduct electricity Bases: • Bitter taste • Feel slippery (soapy) • Conduct electricity II. Definitions (Bronsted / Lowry): 1. Acid: Any substance that can dissociate or “donate” a hydrogen ion ( H + or proton). HCl Æ H + + Cl- eg: H 2 SO 4 Æ H + + HSO 4- eg: 2. Base: Any substance that can accept a proton....
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This note was uploaded on 01/23/2012 for the course CHEM 11 taught by Professor Staff during the Fall '08 term at Concordia AB.

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U4AcidBaseL1 - Chemistry 12 Unit 4 Introduction(Post Lab Discussion Operational Definitions • Describe what acids or bases do… eg Bases turn

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