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    已知在发射卫星时可用肼(N2H4)为燃料.NO2作氧化剂. 这两者反应生成N2和水蒸气.又知: N2(g) + 2O2(g) = 2NO2(g)△H= +67.7kJ/mol N2H4(g) + O2(g) = N2(g) + 2H2O(g),△H= -534kJ/mol 则肼与NO2反应的热化学方程式为: A.N2H4(g) + NO2(g)=2/3N2(g) + 2H2O(g),△H= +567.85 kJ·mol-1 B.N2H4(g) + NO2(g)= 2/3N2(g) + 2H2O(g),△H= -567.85 kJ·mol-1 C.2N2H4(g) + 2NO2(g)= 3N2(g) + 4H2O(g),△H= +567.85 kJ·mol-1 D.2N2H4(g) + 2NO2(g)= 3N2(g) + 4H2O(g),△H= -567.85 kJ·mol-1 【查看更多】

     

    题目列表(包括答案和解析)

    已知在发射卫星时可用肼(N2H4)为燃料和NO2作氧化剂，两者反应生成N2和水蒸气。

    又知：N2(g)＋2O2(g)===2NO2(g)           　 ΔH＝＋67.7kJ·mol－1

    N2H4(g)＋O2(g)===N2(g)＋2H2O(g)      ΔH＝－534kJ·mol－1

    则肼与NO2反应的热化学方程式为（        ）

    A．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(g)    ΔH＝＋567.85kJ·mol－1

    B．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(g)    ΔH＝－567.85kJ·mol－1

    C．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(l)     ΔH＝＋567.85kJ·mol－1

    D．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(l)      ΔH＝－567.85kJ·mol－1

     

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    已知在发射卫星时可用肼(N2H4)为燃料和NO2作氧化剂，两者反应生成N2和水蒸气。
    又知：N2(g)＋2O2(g)===2NO2(g)          　 ΔH＝＋67.7kJ·mol－1
    N2H4(g)＋O2(g)===N2(g)＋2H2O(g)     ΔH＝－534kJ·mol－1
    则肼与NO2反应的热化学方程式为（       ）
    A．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(g) ΔH＝＋567.85kJ·mol－1
    B．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(g) ΔH＝－567.85kJ·mol－1
    C．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(l) ΔH＝＋567.85kJ·mol－1
    D．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(l) ΔH＝－567.85kJ·mol－1

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    已知在发射卫星时可用肼(N2H4)为燃料和NO2作氧化剂，两者反应生成N2和水蒸气。

    又知：N2(g)+2O2(g)===2NO2(g)          　 ΔH＝+67.7kJ·mol-1

    N2H4(g)+O2(g)===N2(g)+2H2O(g)     ΔH＝-534kJ·mol-1

    则肼与NO2反应的热化学方程式为


    1. A.
      N2H4(g)+NO2(g)===3/2N2(g)+2H2O(g) ΔH＝+567.85kJ·mol-1
    2. B.
      N2H4(g)+NO2(g)===3/2N2(g)+2H2O(g) ΔH＝-567.85kJ·mol-1
    3. C.
      N2H4(g)+NO2(g)===3/2N2(g)+2H2O(l) ΔH＝+567.85kJ·mol-1
    4. D.
      N2H4(g)+NO2(g)===3/2N2(g)+2H2O(l) ΔH＝-567.85kJ·mol-1

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    已知在发射卫星时可用肼(N2H4)为燃料和NO2作氧化剂，两者反应生成N2和水蒸气。
    又知：N2(g)＋2O2(g)===2NO2(g)          　 ΔH＝＋67.7kJ·mol－1
    N2H4(g)＋O2(g)===N2(g)＋2H2O(g)     ΔH＝－534kJ·mol－1
    则肼与NO2反应的热化学方程式为（       ）

    A．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(g) ΔH＝＋567.85kJ·mol－1
    B．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(g) ΔH＝－567.85kJ·mol－1
    C．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(l) ΔH＝＋567.85kJ·mol－1
    D．N2H4(g)＋NO2(g)===3/2N2(g)＋2H2O(l) ΔH＝－567.85kJ·mol－1

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    发射卫星时可用肼(N2H4)为燃料,已知某温度下1.6g气态肼在空气中完全燃烧生成氮气和水蒸气,放出热量28 kJ,则肼燃烧的热化学方程式为______________________

    ______________________________________；又知氮气在相同条件下燃烧的热化学方程式为:N2(g)+2O2(g)=2NO2(g) ；△H=+68kJ·mol-1.则该条件下1mol气态肼和二氧化氮完全反应生成氮气和水蒸气时放出的热量为______kJ.

     

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