优优班--学霸训练营 > 知识点挑题
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            • 1.

              \(\rm{S(}\)单斜\(\rm{)}\)和\(\rm{S(}\)正交\(\rm{)}\)是硫的两种同素异形体。

              已知:\(\rm{①S(}\)单斜,\(\rm{s)+O_{2}(g)═══SO_{2}(g)}\)  \(\rm{ΔH_{1}=-297.16 kJ·mol^{-1}}\)

              \(\rm{②S(}\)正交,\(\rm{s)+O_{2}(g)═══SO_{2}(g)}\)  \(\rm{ΔH_{2}=-296.83 kJ·mol^{-1}}\)

              \(\rm{③S(}\)单斜,\(\rm{s)═══S(}\)正交,\(\rm{s)}\) \(\rm{ΔH_{3}}\)

              下列说法正确的是\(\rm{(}\)  \(\rm{)}\)

              A.\(\rm{ΔH_{3}=+0.33 kJ·mol^{-1}}\)

              B.单斜硫转化为正交硫的反应是吸热反应

              C.\(\rm{S(}\)单斜,\(\rm{s)═══S(}\)正交,\(\rm{s)}\) \(\rm{ΔH_{3} < 0}\),正交硫比单斜硫稳定

              D.\(\rm{S(}\)单斜,\(\rm{s)═══S(}\)正交,\(\rm{s)}\) \(\rm{ΔH_{3} > 0}\),单斜硫比正交硫稳定
            • 2.

              黑火药是中国古代的四大发明之一,其爆炸的热化学方程式为:

              \(\rm{S(s)+2KNO_{3}(s)+3C(s)═K_{2}S(s)+N_{2}(g)+3CO_{2}(g) ΔH= x kJ·mol^{-1}}\)

              已知碳的燃烧热\(\rm{ΔH_{1}= a kJ·mol^{-1}}\)

              \(\rm{S(s)+2K(s)═K_{2}S(s)}\)   \(\rm{ΔH_{2}= bkJ·mol^{-1}}\)

              \(\rm{2K(s)+N_{2}(g)+3O_{2}(g)═2KNO_{3}(s)}\)   \(\rm{ΔH_{3}= ckJ·mol^{-1}}\)

              则\(\rm{x}\)为\(\rm{(}\)    \(\rm{)}\)

              A.\(\rm{3a+b-c}\)     
              B.\(\rm{c +3a-b}\)  
              C.\(\rm{a+b-c}\) 
              D.\(\rm{c+a-b}\)
            • 3.

              用\(\rm{H_{2}O_{2}}\)和\(\rm{H_{2}SO_{4}}\)的混合溶液可溶出废旧印刷电路板上的铜。已知:

              \(\rm{Cu(s)+2H^{+}(aq)=Cu^{2+}(aq)+H_{2}(g)}\)  \(\rm{ΔH=+64.39kJ·mol^{-1}}\)

              \(\rm{2H_{2}O_{2}(l)=2H_{2}O(l)+O_{2}(g)}\)  \(\rm{ΔH=-196.46kJ·mol^{-1}}\)

              \(\rm{{{{H}}_{{2}}}{(g})+\dfrac{1}{2}{{{O}}_{2}}{(g})={{{H}}_{{2}}}{O(l})}\)  \(\rm{ΔH=-285.84kJ·mol^{-1}}\)

              在\(\rm{H_{2}SO_{4}}\)溶液中,等物质的量为\(\rm{Cu}\)与\(\rm{H_{2}O_{2}}\)反应生成\(\rm{Cu^{2+}(aq)}\)和\(\rm{H_{2}O(l)}\)的反应热的\(\rm{ΔH}\)等于

              A.\(\rm{-417.91kJ·mol^{-1}}\)
              B.\(\rm{-319.68kJ·mol^{-1}}\)
              C.\(\rm{+546.69kJ·mol^{-1}}\)
              D.\(\rm{-448.46kJ·mol^{-1}}\)
            • 4.

              \(\rm{CO}\)、\(\rm{H_{2}}\)、\(\rm{C_{2}H_{5}OH}\)三种物质燃烧的热化学方程式如下:

              \(\rm{①CO(g)+1/2O_{2}(g)=CO_{2}(g)}\)  \(\rm{ΔH_{1}=a kJ/mol}\)

              \(\rm{②H_{2}(g)+1/2O_{2}(g)=H_{2}O(g)}\)  \(\rm{ΔH_{2}=bkJ/mol}\)

              \(\rm{③C_{2}H_{5}OH(l)+3O_{2}(g)=2CO_{2}(g)+3H_{2}O(g)}\) \(\rm{ΔH_{3}=ckJ/mol}\)

              下列说法正确的是(    )

              A.\(\rm{ΔH_{1} > 0}\)
              B.\(\rm{2H_{2}O(l)=2H_{2}(g)+O_{2}(g)}\) \(\rm{ΔH= }\)--\(\rm{2bkJ/mol}\)

              C.\(\rm{CO_{2}}\)与\(\rm{H_{2}}\)合成\(\rm{C_{2}H_{5}OH}\)反应的原子利用率为\(\rm{100\%}\)

              D.\(\rm{2CO(g)+4H_{2}(g)=H_{2}O(g)+C_{2}H_{5}OH(1)}\)  \(\rm{ΔH=(2a+4b-c)kJ/mol}\)
            • 5. 已知:\(\rm{H_{2}O(g)═H_{2}O(l)\triangle H_{1}=-Q_{1}kJ⋅mol^{-1}(Q_{1} > 0)}\)

                       \(\rm{C_{2}H_{5}OH(g)═C_{2}H_{5}OH(l)\triangle H_{2}=-Q_{2}kJ⋅mol^{-1}(Q_{2} > 0)}\)

                       \(\rm{C_{2}H_{5}OH(g)+3O_{2}(g)═2CO_{2}(g)+3H_{2}O(g)\triangle H_{3}=-Q_{3}kJ⋅mol^{-1}(Q_{3} > 0)}\)

              若使\(\rm{23g}\)液态乙醇完全燃烧并恢复至室温,则放出的热量为\(\rm{(}\)单位:\(\rm{kJ)(}\)  \(\rm{)}\)

                 

              A.\(\rm{Q_{1}+Q_{2}+Q_{3}}\)                              
              B.\(\rm{0.5(Q_{1}+Q_{2}+Q_{3})}\)

                 

              C.\(\rm{0.5Q_{1}-1.5Q_{2}+0.5Q_{3}}\)                      
              D.\(\rm{1.5Q_{1}-0.5Q_{2}+0.5Q_{3}}\)
            • 6.

              根据热化学方程式相关知识回答下列问题。


              \(\rm{(1)}\)如下图Ⅰ所示表示的是\(\rm{1mol NO_{2}}\)和足量\(\rm{CO}\)完全反应生成\(\rm{CO_{2}}\)和\(\rm{NO}\)过程中能量变化示意图,请写出\(\rm{NO_{2}}\)和\(\rm{CO}\)反应的热化学方程式:_________________。


              \(\rm{(2)NaBH_{4}(s)}\)与\(\rm{H_{2}O(l)}\)反应生成\(\rm{NaBO_{2}(s)}\)和\(\rm{H_{2}(g)}\),在\(\rm{25 ℃}\)、\(\rm{101 kPa}\)下,已知每消耗\(\rm{3.8 g NaBH_{4}(s)}\)放热\(\rm{21.6 kJ}\),该反应的热化学方程式是________________。


              \(\rm{(3)}\)合成气\(\rm{(CO}\)和\(\rm{H_{2}}\)为主的混合气体\(\rm{)}\)不但是重要的燃料也是重要的化工原料,制备合成气的方法有多种,用甲烷制备合成气的反应为:

              \(\rm{①2CH_{4}(g)+O_{2}(g)=2CO(g)+4H_{2}(g) ΔH_{1}=-72 kJ·mol^{-1}}\)

              \(\rm{②CH_{4}(g)+H_{2}O(g)=CO(g)+3H_{2}(g) ΔH_{2}=+216 kJ·mol^{-1}}\)

              氢气与氧气反应生成水蒸气的热化学方程式为_____________,现有\(\rm{1 mol}\)由\(\rm{H}\)\(\rm{{\,\!}_{2}}\)\(\rm{O(g)}\)与\(\rm{O}\)\(\rm{{\,\!}_{2}}\)组成的混合气,且\(\rm{O}\)\(\rm{{\,\!}_{2}}\)的体积分数为\(\rm{x}\),将此混合所与足量\(\rm{CH}\)\(\rm{{\,\!}_{4}}\)充分反应。若\(\rm{x=}\)____________时,反应\(\rm{①}\)与\(\rm{②}\)放出\(\rm{(}\)或吸收\(\rm{)}\)的总能量为\(\rm{0}\)。

            • 7.

              已知:\(\rm{Hg_{(l)}+O_{2(g)}=HgO_{(s)\;\;}\triangle H=-akJ·mol^{-1\;\;\;\;\;\;}Zn_{(s)}+O_{2(g)}=ZnO_{(s)\;}\triangle H=-bkJ·mol^{-1}}\),可且\(\rm{b > a}\)由此知反应

              \(\rm{Zn_{(s)}+HgO_{(s)}=ZnO_{(s)}+Hg_{(l)}}\)的焓变为(    )
              A.\(\rm{-(b-a)kJ·mol^{-1\;\;\;\;\;\;\;\;\;\;\;\;}}\)
              B.\(\rm{+(b-a)kJ·mol^{-1}}\)
              C.\(\rm{(b-a)kJ·mol^{-1\;\;\;\;\;\;\;\;\;\;\;\;}}\)
              D.\(\rm{(b+a)kJ·mol^{-1}}\)
            • 8.

              已知:\(\rm{①Zn(s)+ \dfrac{1}{2} O_{2}(g)=ZnO(s) Δ}\)\(\rm{H}\)\(\rm{=-348.3 kJ/mol}\);


              \(\rm{②S(s)+O_{2}(g)=SO_{2}(g) Δ}\)\(\rm{H}\)\(\rm{=-296.8 kJ/mol}\);

              \(\rm{③SO_{2}(g)+ \dfrac{1}{2} O_{2}(g)=SO_{3}(g) Δ}\)\(\rm{H}\)\(\rm{=-98.9 kJ/mol}\);

              \(\rm{④ZnO(s)+SO_{3}(g)=ZnSO_{4}(s) Δ}\)\(\rm{H}\)\(\rm{=-238.8 kJ/mol}\);

              则反应\(\rm{Zn(s)+S(s)+2O_{2}(g)=ZnSO_{4}(s)}\)的反应热是(    )

              A.\(\rm{Δ}\) \(\rm{H}\)\(\rm{=-982.8 kJ/mol}\)
              B.\(\rm{Δ}\) \(\rm{H}\)\(\rm{=+982.8 kJ/mol}\)

              C.\(\rm{Δ}\) \(\rm{H}\)\(\rm{=-491.4 kJ/mol}\)
              D.\(\rm{Δ}\) \(\rm{H}\)\(\rm{=+491.4 kJ/mol}\)
            • 9.

              已知\(\rm{H_{2}O(g)=H_{2}O(l) Δ}\)\(\rm{H}\)\(\rm{=-}\)\(\rm{Q}\)\(\rm{{\,\!}_{1}kJ/mol}\);\(\rm{C_{2}HOH(g)=C_{2}H_{5}OH(l) Δ}\)\(\rm{H}\)\(\rm{=}\)\(\rm{Q}\)\(\rm{{\,\!}_{2}kJ/mol}\);\(\rm{C_{2}H_{5}OH(g)+3O_{2}(g)===2CO_{2}(g)+3H_{2}O(g) Δ}\)\(\rm{H}\)\(\rm{=-}\)\(\rm{Q}\)\(\rm{{\,\!}_{3}kJ/mol}\)。若使\(\rm{23 g}\)液体酒精完全燃烧,最后恢复到室温,则放出的热量为(    )




              A.\(\rm{( }\)\(\rm{Q}\)\(\rm{{\,\!}_{1}+}\) \(\rm{Q}\)\(\rm{{\,\!}_{2}+}\) \(\rm{Q}\)\(\rm{{\,\!}_{3}) kJ}\)

              B.\(\rm{0.5( }\)\(\rm{Q}\)\(\rm{{\,\!}_{1}+}\) \(\rm{Q}\)\(\rm{{\,\!}_{2}+}\) \(\rm{Q}\)\(\rm{{\,\!}_{3}) kJ}\)

              C.\(\rm{(0.5 }\)\(\rm{Q}\)\(\rm{{\,\!}_{1}-1.5}\) \(\rm{Q}\)\(\rm{{\,\!}_{2}+0.5}\) \(\rm{Q}\)\(\rm{{\,\!}_{3}) kJ}\)

              D.\(\rm{(1.5 }\)\(\rm{Q}\)\(\rm{{\,\!}_{1}-0.5}\) \(\rm{Q}\)\(\rm{{\,\!}_{2}+0.5}\) \(\rm{Q}\)\(\rm{{\,\!}_{3}) kJ}\)
            • 10.

              通过以下反应均可获取\(\rm{H_{2}}\)。下列有关说法正确的是                                  \(\rm{(}\)  \(\rm{)}\)

              \(\rm{①}\)太阳光催化分解水制氢:\(\rm{2H_{2}O(l) =2H_{2}(g)+O_{2}(g)}\)          \(\rm{ΔH_{1}= +571.6 kJ·mol^{–1}}\)

              \(\rm{②}\)焦炭与水反应制氢:\(\rm{C(s)+H_{2}O(g) =CO(g)+ H_{2}(g)}\)      \(\rm{ΔH_{2}= +131.3 kJ·mol^{–1}}\)

              \(\rm{③}\)甲烷与水反应制氢:\(\rm{CH_{4}(g)+H_{2}O(g) = CO(g)+3 H_{2}(g)}\)  \(\rm{ΔH_{3}= +206.1 kJ·mol^{–1}}\)

              A.反应\(\rm{①}\)中电能转化为化学能
              B.反应\(\rm{②}\)为放热反应
              C.反应\(\rm{③}\)使用催化剂,\(\rm{ΔH_{3}}\)减小
              D.反应\(\rm{CH_{4}(g)= C(s)+2H_{2}(g)}\)的\(\rm{ΔH_{3}= +74.8 kJ·mol^{–1}}\)
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