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07-reactions_2 - Fri | Sep 7 2007 Chapter 4 Types of...

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1 Week 3 CHEM 1310 - Sections L and M 1 Fri | Sep 7, 2007 Chapter 4: Types of Chemical Reactions Precipitation Reactions (Sections 4.5 - 4.8) Acid-Base Reactions (Section 4.9 ) Oxidation-Reduction Reactions (Section 4.10 - 4.12) Exam #1 - Next Friday (Sep 14) Attendance is mandatory on Sep 14! Week 3 CHEM 1310 - Sections L and M 2 A type of reaction in which a solute exceeds its own solubility in the given solution What is a Precipitation Rxn?
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2 Week 3 CHEM 1310 - Sections L and M 3 Precipitation Conditions Addition of Excess Solute Removal of Solvent Change of Solvent Change of Temperature Under what types of conditions will precipitation occur? Week 3 CHEM 1310 - Sections L and M 4 Questions re: Precipitation Rxns How could one predict what product would precipitate in a given precipitation reaction? How would one write a chemical equation to represent a precipitation reaction
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3 Week 3 CHEM 1310 - Sections L and M 5 Predicting ID of Precipitant Know the chemical formulas of each reactant “Swap” ions Know the solubility rules Potassium Chromate (yellow) Silver Nitrate (clear solution) What is the red precipitate? Week 3 CHEM 1310 - Sections L and M 6 Predicting ID of Precipitant What is the red precipitate? K 2 CrO 4 AgNO 3 Know the chemical formulas of each reactant “Swap” ions Know the solubility rules 2 K + and 1 CrO 4 2- 1 Ag + and 1 NO 3 - Products: Ag 2 CrO 4 and KNO 3
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4 Week 3 CHEM 1310 - Sections L and M 7 Solubility Rules Table 4.1 from Text - VERY IMPORTANT!
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