知识点挑题 - 高中化学 - 优优班--学霸训练营

C．\(\rm{S(g)+O_{2}(g)═SO_{2}(g)}\)　\(\rm{ΔH_{1\;\;}}\)\(\rm{S(s)+O}\)\(\rm{{\,\!}_{2}}\)\(\rm{(g)═SO}\)\(\rm{{\,\!}_{2}}\)\(\rm{(g)}\)　\(\rm{ΔH}\)\(\rm{{\,\!}_{2}}\)　则\(\rm{ΔH}\)\(\rm{{\,\!}_{1}}\)\(\rm{ < ΔH}\)\(\rm{{\,\!}_{2}}\)

D．\(\rm{CO(g)+H_{2}O(g)═CO_{2}(g)+H_{2}(g)}\)　\(\rm{ΔH > 0}\)

难度：较易

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2．

下列说法正确的是

A．\(\rm{CH_{4}(g)+2O_{2}(g)=CO_{2}(g)+2H_{2}O(g)}\)；\(\rm{\triangle H=-890.3 kJ⋅mol^{-1}(}\)燃烧热\(\rm{)}\)

B．同温同压下，反应\(\rm{H_{2}(g)+Cl_{2}(g)=2HCl(g)}\)在光照和点燃条件下的\(\rm{\triangle H}\)不同

C．\(\rm{CaCO_{3}(s)=CaO(s)+CO_{2}(g)}\)室温下不能自发进行，该反应的\(\rm{\triangle H > 0}\)

D．已知：\(\rm{2C(s)+2O_{2}(g)=2CO_{2}(g) \triangle H_{1}}\)；\(\rm{2C(s)+O_{2}(g)=2CO(g) \triangle H_{2}}\)；则\(\rm{\triangle H_{1} < \triangle H_{2}}\)

难度：难

解析收藏试题篮

3．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( )

A．碳的燃烧热大于\(\rm{110.5kJ·mol^{-1\;\;\;\;\;}}\)

B．浓硫酸与稀\(\rm{NaOH}\)溶液反应生成\(\rm{1mol}\)水，放出\(\rm{57.3kJ}\) 热量

C．氢气的燃烧热为\(\rm{241.8kJ·mol^{-1\;\;\;\;\;\;}}\)

D．\(\rm{2H_{2}(g)+O_{2}(g)═2H_{2}O(l)}\)的反应热为\(\rm{ΔH=—571.6kJ·mol^{-1}}\)

难度：较难

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