write a chemical equation to illustrate the use of aluminum for joining cracked railway lines
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Chemical recations involved is as follows:
Fe2O3 + 2Al → 2Fe + Al2O3
Fe2O3 + 2Al → 2Fe + Al2O3
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The process of igniting Aluminium and Ferric oxide is called thermite reaction. This is an exothermic reaction. Iron obtained in this process is in molten state. Fe₂O₃ (s) + Al (s) →Al₂O₃ + 2 Fe(l) + Heat Thermite reaction used for the welding of rails (joining metals) called as thermite welding.
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