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4 cards from this section. Quick, good the night before a test.
What is the oxidation state of an element in its elemental form?
Think of oxygen or nitrogen in their diatomic forms.
In a neutral compound, what must the sum of oxidation states equal?
Consider how various elements combine to form water or carbon dioxide.
What is the oxidation state of oxygen in most compounds?
Remember the common exceptions for oxidation states.
True or False: The oxidation state of carbon in CO₂ is +4.
Consider how the sum of oxidation states works in compounds.
Predict the oxidation states of phosphorus in the phosphoric acid (H₃PO₄) compound.
Balance the oxidation states according to the hydrogen and oxygen contributions.
Consider the reaction between iron (Fe) and copper(II) oxide (CuO). What are the oxidation states of iron before and after the reaction?
Look at the initial neutral states of reactants and determine how they change.
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