10.已知:Fe2O3===CO2 ΔH=+234.14 kJ·mol-1 C(s)+O2(g)===CO2(g) ΔH=-393.5 kJ·mol-1 则2Fe(s)+O2(g)===Fe2O3(s)的ΔH是( ) A.-824.39 kJ·mol-1 B.+ 627.6 kJ·mol-1 C.-744.7 kJ·mol-1 D.-169.4 kJ·mol-1 查看更多

 

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已知:Fe2O3(s)+C(s)===CO2(g)+2Fe(s) ΔH=+234.14 kJ·mol1

C(s)+O2(g)===CO2(g)           ΔH=-393.5 kJ·mol1

则2Fe(s)+O2(g)===Fe2O3(s)的ΔH

A.-824.39 kJ·mol1            B.+ 627.6 kJ·mol1

 C。-744.7 kJ·mol1             D.-169.4 kJ·mol1

 

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已知:Fe2O3(s)+C(s)===CO2(g)+2Fe(s) ΔH=+234.14 kJ·mol1

C(s)+O2(g)===CO2(g)          ΔH=-393.5kJ·mol1

则2Fe(s)+O2(g)===Fe2O3(s)的ΔH

A.-824.39 kJ·mol1           B.+ 627.6kJ·mol1

 C。-744.7 kJ·mol1            D.-169.4kJ·mol1

 

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已知:Fe2O3(s)+C(s)===CO2(g)+2Fe(s) ΔH=+234.14 kJ·mol1
C(s)+O2(g)===CO2(g)           ΔH=-393.5 kJ·mol1
则2Fe(s)+O2(g)===Fe2O3(s)的ΔH

A.-824.39 kJ·mol1B.+ 627.6 kJ·mol1
C.-744.7 kJ·mol1D.-169.4 kJ·mol1

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已知:Fe2O3(s)+C(s)===CO2(g)+2Fe(s) ΔH=+234.14 kJ·mol1
C(s)+O2(g)===CO2(g)           ΔH=-393.5 kJ·mol1
则2Fe(s)+O2(g)===Fe2O3(s)的ΔH
A.-824.39 kJ·mol1B.+ 627.6 kJ·mol1
C.-744.7 kJ·mol1D.-169.4 kJ·mol1

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已知:Fe2O3(s)+C(s)CO2(g)+2Fe(s) ΔH=+234.14 kJ·mol-1

C(s)+O2(g)CO2(g) ΔH=-393.5 kJ·mol-1则2Fe(s)+O2(g)Fe2O3(s)的ΔH是

[  ]

A.

-824.39 kJ·mol-1

B.

+627.6 kJ·mol-1

C.

-744.7 kJ·mol-1

D.

-169.4 kJ·mol-1

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