Redox

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7 Terms

1
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Oxidation Number rules

Metal Hydrides (e.g LiH, CaH2): Hydrogen = -1

Peroxides (e.g H2O2): Oxygen is -1

2
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Oxidation (electrons)

Loss of electrons

Oxidation number becomes more positive

3
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Reduction (electrons)

Gain of electrons

Oxidation number becomes more negative

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Oxidising agents

Accept electrons from the species that is being oxidised

Therefore gains electrons and is reduced

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Reducing Agents

Donate electrons to species being reduced

Therefore loses electrons and is oxidised

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Disproportionation reactions

Species is both oxidised and reduced

Both increase and decrease in oxidation number for that species

<p>Species is both oxidised and reduced</p><p>Both increase and decrease in oxidation number for that species </p>
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Redox reactions w/ Metals

Metal + Acid → Salt + Hydrogen