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    化学反应N2+3H2 =2NH3的能量变化如右图所示.该反应的热化学方程式可以写作( ) A. N2(g)+3H2(g) =2NH3(l) ΔH =2 kJ·mol-1 B. N2(g)+3H2(g) =2NH3(g) ΔH =2 kJ·mol-1 C. 1/2N2(g)+3/2H2(g) =NH3(l) ΔH = kJ·mol-1 D. 1/2N2(g)+3/2H2(g) =NH3 kJ·mol-1 【查看更多】

     

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    化学反应N2+3H2===2NH3的能量变化如右图所示，该反应的热化学方程式是


    1. A.
      N2(g)+3H2(g)===2NH3(l) ΔH＝2(a-b-c)kJ·mol-
    2. B.
      N2(g)+3H2(g)===2NH3(g) ΔH＝2(b-a)kJ·mol-1
    3. C.
      1/2 N2 (g)+3/2H2(g)===NH3(l) ΔH＝(b+c-a)kJ·mol-1
    4. D.
      1/2 N2(g)+3/2H2(g)===NH3(g) ΔH＝(a+b)kJ·mol-1

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    化学反应N2＋3H2===2NH3的能量变化如右图所示，该反应的热化学方程式是

    A．N2(g)＋3H2(g)===2NH3(l)   ΔH＝2(a－b－c)kJ·mol－   

    B．N2(g)＋3H2(g)===2NH3(g)  ΔH＝2(b－a)kJ·mol－1

    C. 1/2 N2 (g)＋3/2H2(g)===NH3(l)    ΔH＝(b＋c－a)kJ·mol－1

    D. 1/2 N2(g)＋3/2H2(g)===NH3(g)   ΔH＝(a＋b)kJ·mol－1

     

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    化学反应N2＋3H2===2NH3的能量变化如右图所示，该反应的热化学方程式是
    A．N2(g)＋3H2(g)===2NH3(l) ΔH＝2(a－b－c)kJ·mol－
    B．N2(g)＋3H2(g)===2NH3(g) ΔH＝2(b－a)kJ·mol－1
    C．1/2 N2 (g)＋3/2H2(g)===NH3(l) ΔH＝(b＋c－a)kJ·mol－1
    D．1/2 N2(g)＋3/2H2(g)===NH3(g) ΔH＝(a＋b)kJ·mol－1

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    化学反应N2＋3H2 ＝ 2NH3的能量变化如右图所示，该反应的热化学方程式是

    A、N2(g)＋3H2(g) ＝ 2NH3(l)；⊿H ＝ 2(a—b—c)kJ/mol

    B、N2(g)＋3H2(g) ＝ 2NH3(g) ；⊿H ＝ 2(b—a)kJ/mol

    C、N2(g)＋H2(g) ＝ NH3(l) ；⊿H ＝ (b＋c—a)kJ/mol

    D、N2(g)＋H2(g) ＝NH3(g) ；⊿H ＝ (a＋b)kJ/mol

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    化学反应N2＋3H2===2NH3的能量变化如右图所示，该反应的热化学方程式是

    A．N2(g)＋3H2(g)===2NH3(l) ΔH＝2(a－b－c)kJ·mol－
    B．N2(g)＋3H2(g)===2NH3(g) ΔH＝2(b－a)kJ·mol－1
    C．1/2 N2 (g)＋3/2H2(g)===NH3(l) ΔH＝(b＋c－a)kJ·mol－1
    D．1/2 N2(g)＋3/2H2(g)===NH3(g) ΔH＝(a＋b)kJ·mol－1

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