Questions: What is the chemical formula for Fe2O3?

What is the chemical formula for Fe2O3?
Transcript text: For Roman Numerals, use: (I) (II) (III) (IV) (V) (VI) (VII) etc. What is the chemical formula for $\mathrm{Fe}_{2} \mathrm{O}_{3}$ ?
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Solution

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Solution Steps

Step 1: Identify the elements

The chemical formula \(\mathrm{Fe}_{2} \mathrm{O}_{3}\) consists of iron (Fe) and oxygen (O).

Step 2: Determine the oxidation states

Iron (Fe) can have multiple oxidation states. In \(\mathrm{Fe}_{2} \mathrm{O}_{3}\), each oxygen (O) has an oxidation state of -2.

Step 3: Calculate the total oxidation state for oxygen

Since there are three oxygen atoms, the total oxidation state for oxygen is \(3 \times -2 = -6\).

Step 4: Balance the oxidation states

To balance the -6 from oxygen, the total oxidation state for iron must be +6. Since there are two iron atoms, each iron atom must have an oxidation state of \(+3\).

Step 5: Write the chemical name

The chemical name for \(\mathrm{Fe}_{2} \mathrm{O}_{3}\) is iron (III) oxide, indicating that iron is in the +3 oxidation state.

Final Answer

The chemical name for \(\mathrm{Fe}_{2} \mathrm{O}_{3}\) is iron (III) oxide.

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