$F e_{2} O_{3} + a - - \to b - + A l_{2} O_{3}$
This is an example of displacement reaction. Find a and b:

a = A l O, b = F e O

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a = A l, b = F e_{2} O_{3}

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a = A l_{2} O, b = F e

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a = 2 A l, b = 2 F e

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Solution

The correct option is D $a = 2 A l, b = 2 F e$
In a displacement reaction, one element from a substance is replaced with another element. So, the completed reaction will be:
$F e_{2} O_{3} + 2 A l \to 2 F e + A l_{2} O_{3}$ .
Here, iron is replaced by aluminium in ferric oxide.

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Similar questions

F e_{2} O_{3} + 2 A l \to A l_{2} O_{3} + 2 F e

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2 A l + C r_{2} O_{3} \to A l_{2} O_{3} + 2 C r

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A l_{2} O_{3}

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- 1141 k J

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${F e}_{2} O_{3}$ + $2 A l$ $\to$ ${A l}_{2} O_{3}$ + $2 F e$

This reaction is an example of :

${F e}_{2} O_{3}$ + $2 A l$ $\to$ ${A l}_{2} O_{3}$ + $2 F e$

This reaction is an example of –

{Fe}_{2} O_{3} + 2 Al \to {Al}_{2} O_{3} + 2 Fe

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