'Pbso4' diaporamas de présentation

Chapter 11

Chapter 11. Electrochemistry. Electromotive Force ( ??? ). 1 joule of work is produced or required when 1 coulomb of charge is transferred between two points in the circuit that differ by a potential of 1 volt. Galvanic Cells (Voltaic Cells ).

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Intersection 15: The End

Intersection 15: The End. 12/12/06. The Final Exam Questions. Electron configurations, atomic structure, periodic trends, atomic orbitals. Quantitative calculations. Lewis & VSEPR Structures and polarity. Thermochemistry Thermochemistry Thermochemistry Acid/Base chemistry

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Chapter 4 Aqueous Reactions and Solution Stoichiometry

Chapter 4 Aqueous Reactions and Solution Stoichiometry. Solutions:. Homogeneous mixtures of two or more pure substances. The solvent is present in greatest abundance. All other substances are solutes . Dissociation.

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Chapter 4

Chapter 4. Red uction- Ox idation Reactions Redox Reactions. Sodium chloride. Sodium chloride. Na ?? Na + + e ?. Cl 2 + 2e ? ?? 2Cl ?. Involves 2 processes: Oxidation = Loss of Electrons Na ?? Na + + e ? Oxidation Half-Reaction Reduction = Gain of electrons

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Dry Cell Battery

Dry Cell Battery. Anode (-) Zn ---> Zn 2+ + 2e- Cathode (+) 2 NH 4 + + 2e- ---> 2 NH 3 + H 2. Alkaline Battery. Nearly same reactions as in common dry cell, but under basic conditions. Anode (-): Zn + 2 OH - ---> ZnO + H 2 O + 2e-

2.67k views • 9 slides