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[" ( "" ( ) "3" heat of combustion."],[" 30.The heat of formation of "Fe_(2)O_(3)" ( "s" ) is "],[-824.2kJmol^(-1)" ."" DeltaH for the reaction."],[2Fe_(2)O_(3)(s)longrightarrow4Fe(s)+3O_(2)(g)" is : "],[[" (A) "-412.1kJ," (B) "-1648.4kJ],[" (C) "-3296.8kJ," (D) "1648.4kJ]]

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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 :

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