# Reactions Question

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[math]KCl + Al rarr AlCl_3 + K[/math]

- [math]KCl + Al rarr AlCl_3 + 3K[/math]
- [math]3KCl + Al rarr 3AlCl_3 + K[/math]
- [math]KCl + Al rarr 3AlCl_3 + 3K[/math]
- [math]3KCl + Al rarr AlCl_3 + 3K[/math]