Chem 111 Chapter 3 [ Kotz] Chemical Reactions Highlights

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Chem 111 Chapter 3 Kotz Chemical
ReactionsHighlights

• Dr. McGoldrick

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Chapter Overview

• Balanced Equations
• Double Displacement Reactions
• Acids and Bases
• Redox Reactions

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Balancing Reactions, Examples

• C4 H10 O2 --gt CO2 H2Ocombustion
• KClO3 --heat--gt KCl O2 decomposition

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For Balanced Reactions

• Use coefficients
• Whole numbers only
• Smallest ratios

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Electrolytes

• Solution terminology
• Strong electrolytes
• Equilibrium defined
• Weak electrolytes
• Nonelectrolytes
• Examples

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Driving Forces for Double Displacement Reactions
(Metathesis)

• ppt
• gas
• weak electrolyte

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For PPTs- Solubility Rules

• See text page 126
• Guidelines for reaction writing -balance all
  equations
• - use (aq) to show soluble species

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DD Reaction WritingGuidelines

• Determine all ionic charges
• Switch ions
• Write formulas
• Balance
• Correlate (ptt?gas? w.e.?)

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DD Formats

• Total molecular form
• Total ionic form
• Net ionic form

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Acids and Bases

• Arrhenius Definitions
• Bronsted- Lowry Definition
• Examples
• Neutralization
• Nomenclature for acids (see h.o.)

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Redox

• Define oxidation
• Define reduction
• Concept of net redox
• Oxidation numbers
• Know rules - see p. 144 - 45
• Recognize redox

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End Chapter 3

• Homework p. 152-155 3, 5, 13, 17, 21, 23, 27,
  33ab, 39, 41, 45a, 47, 59