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The heat of formation of Fe(2)O(3) is -8...

The heat of formation of `Fe_(2)O_(3)` is `-824.2` kJ `mol^(-1). Delta H` for the reaction `2Fe_(2)O_(3)(s)rarr 4Fe(s)+3O_(2)(g)` is :

A

`-412.1 kJ`

B

`-1648.4 kJ`

C

`-3296.8 kJ`

D

1648.4 kJ

Text Solution

Verified by Experts

The correct Answer is:
D
`2Fe + (3)/(2)O_(2) rarr Fe_(2)O_(3) Delta H = - 824.2 kJ`
:. `2Fe_(2)O(3) rarr 4Fe + 3O_(2)`
`Delta H = 2 xx (824.2) = 1648.4 kJ`
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