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Chapter 4 - Chapter 4 Major Classes of Chemical Reactions...

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Slide No. 1 Chapter 4: Major Classes of Chemical Reactions Water as a solvent Electrolytes Polar nature of water Precipitation Reactions Predicting the products Net ionic equations Acid-Base Reactions Strong and weak acids and bases Three reaction subclasses Reading: Sections 4.1-4.5 (4.6 and 4.7 are skipped); PLUS 18.2 Homework Problems: Chapter 4: 6(5), 18(19a,b), 29(30), 31(32), 33(34), 35(36), 45(46), 49(50), 60(61), 66(67), 68(69), 70(71), 74(75), 76(77). Chapter 18: 23, 25, 27, 29 Lecture Outline The pH Scale (Ch. 18.2) Oxidation-Reduction Reactions Terminology Complex redox reactions Oxidation numbers Titrations Slide No. 2 4.1 Aqueous Reactions: Water as a solvent Many important reactions take place in water. biological reactions most of our planet covered by water: oceans, rivers, streams water = solvent ; dissolved substances = solute . HCl (aq) + NaOH (aq) Æ NaCl (aq) + H 2 O (l) Three classes of typical aqueous reactions Precipitation Acid-Base (Neutralization) Redox (Oxidation-Reduction)
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