已知H2O(g) = H2(g) +0.5O2(g),ΔrHm(1) = 241.8 kJ·mol–1;H2(g) = 2H(g),ΔHm(2) = 436.0 kJ·mol–1;0.5O2(g) = O(g),ΔHm(3)=247.7 kJ·mol–1则H2O中H–O键的平均键焓(单位:kJ·mol–1)为() A: 462.8 B: 925.5 C: –462.8 D: 241.8
已知H2O(g) = H2(g) +0.5O2(g),ΔrHm(1) = 241.8 kJ·mol–1;H2(g) = 2H(g),ΔHm(2) = 436.0 kJ·mol–1;0.5O2(g) = O(g),ΔHm(3)=247.7 kJ·mol–1则H2O中H–O键的平均键焓(单位:kJ·mol–1)为() A: 462.8 B: 925.5 C: –462.8 D: 241.8
已知298K时△fHmΘ Fe3O4,s= -1118.0 kJ·mol-1,△fHmΘH2O,g = -241.8 kJ·mol-1,则 反 应 Fe3O4 s+ 4H2 g → 3Fe s + 4H2O g 的△rHmΘ= .... ......
已知298K时△fHmΘ Fe3O4,s= -1118.0 kJ·mol-1,△fHmΘH2O,g = -241.8 kJ·mol-1,则 反 应 Fe3O4 s+ 4H2 g → 3Fe s + 4H2O g 的△rHmΘ= .... ......
3 、已知 298K 时25b3 f H m 0398 (Fe 3 O 4 , s) = -1118.0 kJ00b7mol -1 ,25b3 f H m 0398 (H 2 O , g) = -241.8 kJ00b7mol -1 ,则 反 应 Fe 3 O 4 (s) + 4H 2 (g) 2192 3Fe(s) + 4H 2 O(g) 的25b3 r H m 0398 = .... ......
3 、已知 298K 时25b3 f H m 0398 (Fe 3 O 4 , s) = -1118.0 kJ00b7mol -1 ,25b3 f H m 0398 (H 2 O , g) = -241.8 kJ00b7mol -1 ,则 反 应 Fe 3 O 4 (s) + 4H 2 (g) 2192 3Fe(s) + 4H 2 O(g) 的25b3 r H m 0398 = .... ......
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