Question
\( \mathrm{Fe}_{2} \mathrm{O}_{3}+\mathrm{Al} \longrightarrow \mathrm{Al}_{2} \mathrm{O}_{3}+\mathrm{Fe}+\mathrm{Heat} \) Balance the above reaction
Ask by Lowe Flynn. in India
Jan 25,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
The balanced equation is:
\[
\mathrm{Fe}_2\mathrm{O}_3 + 2\,\mathrm{Al} \longrightarrow \mathrm{Al}_2\mathrm{O}_3 + 2\,\mathrm{Fe}
\]
Solution
To balance the thermite reaction:
\[
\mathrm{Fe}_2\mathrm{O}_3 + \mathrm{Al} \longrightarrow \mathrm{Al}_2\mathrm{O}_3 + \mathrm{Fe} + \text{Heat}
\]
Follow these steps:
1. **Identify the number of atoms for each element on both sides:**
- **Reactants:**
- Fe: 2
- O: 3
- Al: 1
- **Products:**
- Al: 2
- O: 3
- Fe: 1
2. **Balance Aluminum (Al):**
There are 2 Al atoms in \(\mathrm{Al}_2\mathrm{O}_3\) on the product side, so place a coefficient of 2 before Al on the reactant side:
\[
\mathrm{Fe}_2\mathrm{O}_3 + 2\,\mathrm{Al} \longrightarrow \mathrm{Al}_2\mathrm{O}_3 + \mathrm{Fe}
\]
3. **Balance Iron (Fe):**
Now, there are 2 Fe atoms on the reactant side and only 1 on the product side. Place a coefficient of 2 before Fe on the product side:
\[
\mathrm{Fe}_2\mathrm{O}_3 + 2\,\mathrm{Al} \longrightarrow \mathrm{Al}_2\mathrm{O}_3 + 2\,\mathrm{Fe}
\]
4. **Verify Oxygen (O):**
Oxygen is already balanced with 3 atoms on each side.
The balanced equation is:
\[
\boxed{\mathrm{Fe}_2\mathrm{O}_3 + 2\,\mathrm{Al} \longrightarrow \mathrm{Al}_2\mathrm{O}_3 + 2\,\mathrm{Fe}}
\]
Reviewed and approved by the UpStudy tutoring team
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Simplify this solution The Deep Dive
To balance the reaction \( \mathrm{Fe}_{2} \mathrm{O}_{3} + \mathrm{Al} \longrightarrow \mathrm{Al}_{2} \mathrm{O}_{3} + \mathrm{Fe} + \mathrm{Heat} \), we start by ensuring that the number of each type of atom is the same on both sides. The balanced equation is: \[ 2 \mathrm{Fe}_{2} \mathrm{O}_{3} + 6 \mathrm{Al} \longrightarrow 3 \mathrm{Al}_{2} \mathrm{O}_{3} + 4 \mathrm{Fe} \] This means we have 2 iron (III) oxide molecules reacting with 6 aluminum atoms to produce 3 aluminum oxide molecules and 4 iron atoms. The adjustment of coefficients ensures that the law of conservation of mass is upheld without changing the actual substances involved!
