Iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide. Identify the type of the reaction:

Displacement reaction

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Redox reaction

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Decomposition reaction

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Esterificaton reaction

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Solution

The correct options are
A Displacement reaction
B Redox reaction
Iron(III) oxide ( $F e_{2} O_{3}$ ) reacts with aluminium(Al) to form aluminium oxide( $A l_{2} O_{3}$ ) and molten iron(Fe). This is a displacement reaction as aluminium displaces iron in iron(III)oxide to form aluminium oxide. Also it is a redox reaction as both oxidation of aluminium and reduction of iron is taking place. The equation can be written as:
$2 A l (s) + F e_{2} O_{3} (s) \to A l_{2} O_{3} (s) + 2 F e (l) + h e a t$

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