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Redox Reactions
OXIDATION AND REDUCTION…read more

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Redox
Oxidation is loss of electrons
Reduction is gain of electrons
Oxidation
Is
Loss
Reduction
Is
Gain…read more

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Redox
Zn+ HSO² Zn²SO² + H
Half Equations
Zn ­ 2e Zn² Oxidation Reaction
2H + 2e H Reduction Reaction
Oxidising Agent ­ Removes Electrons
Reducing Agent ­ Gives Electrons
- 0
More Negative
Less Positive
+ More Positive
Less Negative…read more

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Oxidation State Rules
1. Simple Ions: Oxidation State is the Charge
Br Na
2. Atoms in Elements: Oxidation State is Zero
Cl2 Br2
3. Compounds: Sum of Oxidation States is Zero
KBr
4. Compound Ions: Sum of Oxidation States is Charge
NO3
5. Covalent Molecules: Assumed to be Ionic
H2O ....... H2O²
6. Transition Metals: Variable Oxidation States
7. Cl, Br, I : Variable Oxidation States…read more

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Fixed Oxidation States
Oxidation State Elements
1 K Na Li
(H usually ­ can be H when attached)
2 Mg² Ca² Ba²
3 Al³
2 O²
1 F…read more

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