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Given the standard enthalpies at 298K in...

Given the standard enthalpies at 298K in kJ `//` mol for the following two reactions
`Fe_(2) O_(3) ( s) + ( 3)/( 2) C ( s) rarr ( 3)/( 2) CO_(2) ( g) + 2Fe ` `Delta H = +234` .....(1)
`C ( s) + O_(2)(g) rarr CO_(2)(g)` `Delta H = - 393 ` ....(2)
The value of `Delta H ` for `4Fe(s) + 3O_(2)(g) rarr 2Fe_(2)O_(3) ( s)` is

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