08-G1 Oxidation-Reduction

08-G1 Oxidation-Reduction - Section 8 Oxidation-Reduction...

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1 Section 8 Oxidation-Reduction Electron transfer Uses for oxidation numbers: Derivation of chemical formulas Nomenclature Electron "bookkeeping" during oxidation/reduction reactions Oxidation number (or oxidation state ) ≡ The charge an atom in a substance would have if the pairs of electrons in each bond belonged to the more electronegative atom.
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2 Guidelines for Oxidation Numbers 1. The oxidation number of an atom of a free (uncombined) element is 0. 2. Given two elements that are combined chemically: The more electronegative element has a negative (-) oxidation state. The more electropositive element has a positive (+) oxidation state. Na N 2 P 4 0 0 0 0 for each atom SO 3 H 2 S Na 3 P P 4 O 10 + + + + +6 +1 +5 +1 −2 −2 −2 −3
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3 Theoretical maximum: + group number Theoretical minimum: group number - 8 . Ranges of oxidation numbers for Main Group (Group A) elements:
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4 4. Chemical formulas Monatomic ions: Ionic charge and oxidation number are identical
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This note was uploaded on 11/16/2011 for the course CHM 2045 taught by Professor Mitchell during the Fall '07 term at University of Florida.

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08-G1 Oxidation-Reduction - Section 8 Oxidation-Reduction...

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