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**1.
****Assign oxidation numbers to
each element and**

** determine
which substances are changing their oxidation states.**

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**2.
****Write an unbalanced half
reaction for oxidation and reduction.**

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**3.
****Balance each half reaction
by**

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**a.
****Balance the main element**

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**b.
****Balance any O by adding H _{2}O**

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**c.
****Balance any H by adding H ^{+}
ions**

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**d.
****Balance the charges by
adding electrons, e ^{-}**

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**4.
****Multiply each half-reaction
by an appropriate coefficient so that**

**the number of
electrons lost = the number of electrons gained**

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**5.
****Add the two half reactions
together.**

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**6. Eliminate anything that appears in identical form on both sides
of**

** the equation.**

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**7. Check that the charges balance on both sides of the equation. **

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