Problem: Explain how to identify the reducing agent in a reaction of magnesium with oxygen.

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We’re being asked to identify the reducing agent in a reaction of magnesium with oxygen.


The reaction between magnesium metal and oxygen produces magnesium oxide as shown below:

2 Mg(s) + O2(g)  2 MgO(s)


To do so, we need to identify the change in oxidation state for each element in the reaction. 

Recall the mnemonic for redox reactions:

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Explain how to identify the reducing agent in a reaction of magnesium with oxygen.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Redox Reactions concept. You can view video lessons to learn Redox Reactions. Or if you need more Redox Reactions practice, you can also practice Redox Reactions practice problems.