Redox

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Oxidation number
A measure of the number of electrons an atom uses to bond with an atom of a different element
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Oxidation
Loss of electrons or an increase in oxidation number
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Oxidising agent
A reagent that oxideses (takes electrons from) another species
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Reduction
The gain of electrons or a decrease in oxidation number
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Reducing agent
A reagant that reduces (adds electrons too) another species
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Redox
A reaction where both oxidation and reduction take place
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Reaction of MnO4-/Fe2+
Fe2+(aq) --> Fe3+(aq) + e- /////////// MnO4- + 8H+ + 5e- --> Mn2+ + 4H2O /////// Purple (Mn7+) ----> Pink (Mn2+)
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Reaction of MnO4-/H2O2
H2O2 --> 2H+ + O2 + 2e- /////////// MnO4- + 8H+ + 5e- --> Mn2+ + 4H2O
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Reaction of I2/S2O3(^2-)
2S2O3(^2-) (aq) --> S4O6(^2-) (aq) + 2e- 0 /////////// I2(aq) + 2e- --> 2I-(aq)
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Other cards in this set

Card 2

Front

Loss of electrons or an increase in oxidation number

Back

Oxidation

Card 3

Front

A reagent that oxideses (takes electrons from) another species

Back

Preview of the back of card 3

Card 4

Front

The gain of electrons or a decrease in oxidation number

Back

Preview of the back of card 4

Card 5

Front

A reagant that reduces (adds electrons too) another species

Back

Preview of the back of card 5
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