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8． 25℃.101 kPa下.CO.HCOOH.CH4和CH3OH的燃燒熱依次是67.6 kJ/mol.62.8kJ/mol.890.3 kJ/mol.726kJ/mol.則下列熱化學(xué)方程式不正確的是( ) A．CO(g)+O2(g)＝CO2(g),DH＝-67.6 kJ/mol B．HCOOH(1)+O2(g)＝CO2(g)+H2O(1),DH＝-62.8 kJ/mol C．CH4g)+2O2(g)＝CO2(g)+2H2O(g),DH＝-890.3 kJ/mol D．2CH3OH(l)+3O2(g)＝2CO2(g)+4H2O(l),DH＝-1452 kJ/mol 【查看更多】

 

題目列表(包括答案和解析)

25℃、101 kPa下，CO、HCOOH、CH4和CH3OH的燃燒熱依次是67.6 kJ/mol、62.8kJ/mol、890.3 kJ/mol、726kJ/mol，則下列熱化學(xué)方程式不正確的是(    )

A．CO(g)＋O2(g)＝CO2(g)；DH＝－67.6 kJ/mol

B．HCOOH(1)＋O2(g)＝CO2(g)＋H2O(1)；DH＝－62.8 kJ/mol

C．CH4g)＋2O2(g)＝CO2(g)＋2H2O(g)；DH＝－890.3 kJ/mol

D．2CH3OH(l)＋3O2(g)＝2CO2(g)＋4H2O(l)；DH＝－1452 kJ/mol

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25℃、101 kPa下，CO、HCOOH、CH4和CH3OH的燃燒熱依次是67.6 kJ/mol、62.8kJ/mol、890.3 kJ/mol、726kJ/mol，則下列熱化學(xué)方程式不正確的是(   )
A．CO(g)＋O2(g)＝CO2(g)；DH＝－67.6 kJ/mol
B．HCOOH(1)＋O2(g)＝CO2(g)＋H2O(1)；DH＝－62.8 kJ/mol
C．CH4g)＋2O2(g)＝CO2(g)＋2H2O(g)；DH＝－890.3 kJ/mol
D．2CH3OH(l)＋3O2(g)＝2CO2(g)＋4H2O(l)；DH＝－1452 kJ/mol

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25℃、101 kPa下，CO、HCOOH、CH4和CH3OH的燃燒熱依次是67.6 kJ/mol、62.8kJ/mol、890.3 kJ/mol、726kJ/mol，則下列熱化學(xué)方程式不正確的是


  1. A.
    CO(g)+O2(g)＝CO2(g)；DH＝-67.6 kJ/mol
  2. B.
    HCOOH(1)+O2(g)＝CO2(g)+H2O(1)；DH＝-62.8 kJ/mol
  3. C.
    CH4g)+2O2(g)＝CO2(g)+2H2O(g)；DH＝-890.3 kJ/mol
  4. D.
    2CH3OH(l)+3O2(g)＝2CO2(g)+4H2O(l)；DH＝-1452 kJ/mol

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25℃、101 kPa下，CO、HCOOH、CH4和CH3OH的燃燒熱依次是67.6 kJ/mol、62.8kJ/mol、890.3 kJ/mol、726kJ/mol，則下列熱化學(xué)方程式不正確的是(    )

A．CO(g)＋O2(g)＝CO2(g)；DH＝－67.6 kJ/mol

B.HCOOH(1)＋O2(g)＝CO2(g)＋H2O(1)；DH＝－62.8 kJ/mol

C．CH4g)＋2O2(g)＝CO2(g)＋2H2O(g)；DH＝－890.3 kJ/mol

D．2CH3OH(l)＋3O2(g)＝2CO2(g)＋4H2O(l)；DH＝－1452 kJ/mol

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