Displacement reactions also play a key role in extracting metals
‘‘Displacement reactions also play a key role in extracting metals in the middle of the reactivity series.’’ Justify this statement with two examples.
- Answer:
$$ 3\,\text{MnO}_{2}(s) + 4\,\text{Al}(s) \;\longrightarrow\; 3\,\text{Mn}(\ell) + 2\,\text{Al}_{2}\text{O}_{3}(s) + \text{heat} $$
$$\text{Fe}_{2}\text{O}_{3}(s) + 2\,\text{Al}(s) \;\longrightarrow\; 2\,\text{Fe}(\ell) + \text{Al}_{2}\text{O}_{3}(s) + \text{heat} $$
- Exam Year: 2025
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