chm oxidation

chm oxidation - Reduction=Gaining • The atoms of an...

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Oxidation States • The oxidation # of any uncombined element is 0 • The more electronegative element in a binary compound is assigned the number equal to the charge that it would have if it were an ion • The oxidation state of hydrogen in most of its compounds is +1 unless it is combined with a metal therefore -1 • The sum of the oxidation numbers of all atoms in a neutral compound is 0 Oxidation=Losing • The atoms of an element increase in oxidation number and are said to be oxidized • EX: 01 • What has to happen to the atom for the oxidation number to increase?LOSE ELECTRONS
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Unformatted text preview: Reduction=Gaining • The atoms of an element decrease in oxidation number and are said to be reduced • EX: -2-4 • What has to happen to the atom for reduction to take place?GAIN ELECTRONS Oxidation-Reduction Reactions • Both processes happen simultaneously • The number of electrons produced by oxidation must equal the number of electrons acquired in reduction • Each process can be written as a half reaction o KK+1 +1e- OXIDATION o 2e- + SS-2 REDUCTION • REDOX=if the oxidation #’s are different on one side vs. the other...
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This note was uploaded on 02/25/2012 for the course CHEM 4385 taught by Professor Staff during the Fall '11 term at Texas State.

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