优优班--学霸训练营 > 题目详情
  • 已知反应:
    \(\rm{①101kPa}\)时,\(\rm{2C(s)+O}\)\(\rm{{\,\!}_{2}}\)\(\rm{(g)═2CO(g)}\) \(\rm{ΔH=-221kJ·mol}\)\(\rm{{\,\!}^{-1}}\)
    \(\rm{{\,\!}}\)\(\rm{②}\)稀溶液中,\(\rm{H}\)\(\rm{{\,\!}^{+}}\)\(\rm{(aq)+OH}\)\(\rm{{\,\!}^{-}}\)\(\rm{(aq)═H}\)\(\rm{{\,\!}_{2}}\)\(\rm{O(l)}\) \(\rm{ΔH=-57.3kJ·mol}\)\(\rm{{\,\!}^{-1}}\)
    \(\rm{{\,\!}}\)\(\rm{③H}\)\(\rm{{\,\!}_{2}}\)\(\rm{(g)+}\)\(\rm{ \dfrac{1}{2}}\)\(\rm{O}\)\(\rm{{\,\!}_{2}}\)\(\rm{(g)═H}\)\(\rm{{\,\!}_{2}}\)\(\rm{O(g)}\) \(\rm{ΔH=-241.8kJ·mol}\)\(\rm{{\,\!}^{-1}}\)

    \(\rm{{\,\!}}\)\(\rm{④H}\)\(\rm{{\,\!}_{2}}\)\(\rm{O(g)═H}\)\(\rm{{\,\!}_{2}}\)\(\rm{O(l)}\) \(\rm{ΔH=-44.0kJ·mol}\)\(\rm{{\,\!}^{-1}}\)

    下列结论正确的是(    )

    【考点】中和热,燃烧热,反应热和焓变,用盖斯定律及有关计算
    【分析】请登陆后查看
    【解答】请登陆后查看
    难度:较难
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