Redox Chemistry
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13 Terms
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Single displacement
________ (replacement) reactions: redox reactions in which an ion in solution is displaced (or replaced) via the oxidation of a metallic element.
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Reduction
________: gain of electrons.
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Balance charge
________ by adding electrons.
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The sum of the oxidation number in a polyatomic ion equals
the charge on the ion.
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The sum of the oxidation numbers for all atoms in a molecule must be
zero.
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Oxidation number
________ (or oxidation state) of an element in a compound: the charge its atoms would possess if the compound was ionic.
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Oxidation
loss of electrons
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Reduction
gain of electrons
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Reducing agent
is oxidized; LOSES electrons, and its charge goes up
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Oxidizing agent
is reduced; gains electrons, and its charge goes DOWN
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Oxidation number (or oxidation state) of an element in a compound
the charge its atoms would possess if the compound was ionic
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Single-displacement (replacement) reactions
redox reactions in which an ion in solution is displaced (or replaced) via the oxidation of a metallic element
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Write the two individual half-reactions
the oxidation and the reduction