Che 103 chapter3

Compound losing electrons reduction involves a

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Unformatted text preview: Carbonic acid is unstable and forms CO2 & H2O H2CO3(aq) → CO2 + water (aq) CO (The antacid tablet contains citric acid + NaHCO3) Oxidation-Reduction Reactions REDOX = reduction & oxidation REDOX O2(g) + 2 H2(g) → 2 H2O(l) Oxidation-Reduction Reactions • Oxidation involves a reactant atom or compound losing electrons. • Reduction involves a reactant atom or substance gaining electrons. • Neither process can occur alone… that is, there must be an exchange of electrons in the process. • The substance that is oxidized is the reducing agent reducing • The substance that is reduced is the oxidizing agent reduced oxidizing oxidized reduced Mg(s) + 2H+(aq) → reducing reducing agent agent oxidizing oxidizing agent agent Mg2+(aq) + H2(g) Oxidation Numbers • Chemists use oxidation numbers to account for the oxidation transfer of electrons in a RedOx reaction. • Oxidation numbers are the actual or apparent charge on the atom when alone or combined in a compound. 1. The atoms of pure elements always have an 1. oxidation numbe...
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This note was uploaded on 04/09/2014 for the course CHE 103 taught by Professor Moran during the Spring '07 term at West Chester.

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