【单选题】已知 298K 时 △ f H m Θ (Fe 3 O 4 , s) = -1118.0 kJ·mol -1 , △ f H m Θ (H 2 O , g) = -241.8 kJ·mol -1 ,则 反 应 Fe 3 O 4 (s) + 4H 2 (g) → 3Fe(s) + 4H 2 O(g) 的 △ r H m Θ =
【单选题】已知298K时△ f H m Θ Fe 3 O 4 ,s= -1118.0 kJ·mol -1 ,△ f H m Θ H 2 O,g = -241.8 kJ·mol -1 ,则 反 应 Fe 3 O 4 s+ 4H 2 g → 3Fe s + 4H 2 O g 的△ r H m Θ = .... ......