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    12．已知: Fe2O3 = CO2 △H =+234.1 kJ·mol-1 C(s)+O2(g) = CO2(g) △H =-393.5 kJ·mol-1 则2Fe(s)+O2(g) = Fe2O3(s)的△H是 A．-824.4 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】

     

    题目列表(包括答案和解析)

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

    C(s)＋O2(g)===CO2(g)　         ΔH＝－393.5kJ·mol－1

    则2Fe(s)＋O2(g)===Fe2O3(s)的ΔH是

    A．－824.39 kJ·mol－1           B．+ 627.6kJ·mol－1

     C。－744.7 kJ·mol－1            D．－169.4kJ·mol－1

     

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     已知：Fe2O3(s)＋C(s) = CO2(g)＋2Fe(s)  H =＋234.1 kJ·mol－1

    C(s)＋O2(g) = CO2(g)  H =－393.5 kJ·mol－1    

    则2Fe(s)＋O2(g) = Fe2O3(s)的H是                (     )

    A．－824.4 kJ·mol－1  B．－627.6 kJ·mol－1   

    C．－744.7 kJ·mol－1  D．－169.4 kJ·mol

     

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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－1B．+ 627.6 kJ·mol－1
    C．－744.7 kJ·mol－1D．－169.4 kJ·mol－1

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     已知：Fe2O3(s)＋C(s) = CO2(g)＋2Fe(s)  H =＋234.1 kJ·mol－1

    C(s)＋O2(g) = CO2(g)   H =－393.5 kJ·mol－1    

    则2Fe(s)＋O2(g) = Fe2O3(s)的H是                 (     )

    A．－824.4 kJ·mol－1   B．－627.6 kJ·mol－1   

    C．－744.7 kJ·mol－1   D．－169.4 kJ·mol

     

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