(1)已知:
(a)CH4(g)+2O2(g)=CO2(g)+2H2O(l) ΔH1=-890.3 kJ·mol1
(b)2H2(g)+O2(g)=2H2O(l) ΔH2=-571.6 kJ·mol1
(c)C(s)+O2(g)=CO2(g) ΔH3=-393.5 kJ·mol1
①C(s)+2H2(g)=CH4(g) ΔH=
②CH4制备合成气的原理是CH4(g)+CO2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
A. 下列叙述能表示该反应在恒温恒容条件下达到平衡状态的是
a. 混合气体的压强不再发生变化
b. 混合气体的密度不再发生变化
c. 反应容器中CO2、CO的物质的量的比值不再发生变化
d. 混合气体的平均相对分子质量不再发生变化
B. 若1 g CH4(g)完全反应吸收热量为15.5 kJ。在恒容密闭容器中充入1 mol CH4和1 mol CO2在一定条件下反应,体系吸收热量随着时间变化如图所示。在该条件下,甲烷的最大转化率(α)为
![](https://img.xkw.com/dksih/QBM/2021/12/14/2872481138868224/3057187010150400/STEM/ee80cf6298904d1ca0229570bcba581f.png?resizew=223)
(2)在密闭容器中发生反应:2NO(g)+H2(g)= N2(g)+2H2O(g),其反应速率与浓度关系式为v=kcm(NO)·cn(H2)(k为常数,只与温度有关,m、n为反应级数,取正整数),在某温度下测得有关数据如表所示。
序数 | c(NO)/(mol·L1) | c(H2)/(mol·L1) | v/(mol·L1·min1) |
Ⅰ | 0.10 | 0.10 | 0.414 |
Ⅱ | 0.20 | 0.20 | 3.312 |
Ⅲ | 0.10 | 0.20 | 0.828 |
总反应分两步进行:第i步,2NO+H2=N2+H2O2(很慢);第ii步,H2O2+H2=2H2O(很快)。在上述温度下,当c(NO)=c(H2)=0.50 mol·L1时v=
(3)在2 L恒容密闭容器中充入3 mol NO(g)和3 mol CO(g),发生反应:2NO(g)+2CO(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
(4)汽车尾气中含有CO、NO2等有毒气体,对汽车加装尾气净化装置,可使有毒气体相互反应转化为无毒气体:4CO(g)+2NO2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
![](https://img.xkw.com/dksih/QBM/2021/12/14/2872481138868224/3057187010150400/STEM/3d525f107a6f40cfb2e47b5afc87c258.png?resizew=445)
![](https://img.xkw.com/dksih/QBM/2021/12/14/2872481138868224/3057187010150400/STEM/ed34b13996934354863224275a58fd73.png?resizew=213)
相似题推荐
反应Ⅰ:CH3OH(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
反应Ⅱ:CH3OH(g)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
反应Ⅲ:H2(g)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
副反应:反应Ⅳ:CH3OH(g)+O2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
(1)在恒温恒压下的密闭容器中,充入1mol的甲醇,发生反应I,若起始压强为p0=aPa,达到平衡时甲醇的转化率为50%,计算反应平衡常数Kp=
(2)Na2CO3是甲醇脱氢制甲醛的催化剂,有研究指出,催化反应的部分机理如下:
历程ⅰ:CH3OH→·H+·CH2OH
历程ⅱ:·CH2OH→·H+HCHO
历程ⅲ:·CH2OH→3·H+CO
历程ⅳ:·H+·H→H2
如图表示一定条件下温度对碳酸钠催化脱氢性能的影响,回答下列问题:
![](https://img.xkw.com/dksih/QBM/2020/11/6/2587008885858304/2587283773980672/STEM/8e5590c8d1ad456ca7e3ba9bfbe93754.png?resizew=322)
①从平衡角度解析550~650℃甲醇生成甲醛的转化率随温度升高的原因
②反应历程ⅰ的活化能
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
③650~750℃,反应历程ⅱ的速率反应
【推荐2】近年来,磁性材料的研究备受国际磁学界的关注。Fe3O4具有许多优异的性能,在磁性材料等领域应用广泛。回答下列问题:
(1)以太阳能为热源分解Fe3O4,经由热化学铁氧化合物循环分解水制H2的过程如图所示。
已知:H2O(l)= H2(g)+O2(g)△H1+285.5kJ·mol-1
过程I:2 Fe3O4(s)⇌6 FeO (s)+O2(g)△H2=+313.2kJ•mol-1
则过程II的热化学方程式为
(2)磁铁矿(Fe3O4)是工业上冶炼铁的原料之一,发生的主要反应为Fe3O4(s)+4CO(g)⇌3Fe(s)+4CO2(g)△H <0,T℃ 时,在 1L 恒容密闭容器中加入Fe3O4、CO各0.5mol,5min反应达到平衡时,固体质量减小了6.4g。
①从起始到反应达到平衡时v(CO2)=
②欲提高该反应中 CO的平衡转化率,可采取的措施是
③其他条件不变时,该反应在不同温度下,CO2的产率随时间的变化α(CO2)~t曲线如图所示,温度T1、T2、T3由大到小的关系是
(1)脱硝。为消除NOx对环境的污染,利用NH3在一定条件下与NO反应生成无污染气体。
已知:4NH3(g)+5O2(g)
![](https://img.xkw.com/dksih/QBM/2019/3/26/2168985279995904/2170107255234560/STEM/cf0a44b31d034ae4b8103df595e43896.png?resizew=33)
N2(g)+O2(g)
![](https://img.xkw.com/dksih/QBM/2019/3/26/2168985279995904/2170107255234560/STEM/69e9ff98e5934f4dafa9b22d944fab5f.png?resizew=33)
①NH3(g)与NO(g)在一定条件下反应的热化学方程式为:
②下图是①中反应过程中NH3的体积分数随X变化的示意图,X代表的物理量可能是
![](https://img.xkw.com/dksih/QBM/2019/3/26/2168985279995904/2170107255234560/STEM/f1a395e8-80bb-43cc-b969-8b751f00cdd2.jpg?resizew=211)
(2)脱硫。下图电解装置可将雾霾中的SO2、NO转化为(NH4)2SO4。
![](https://img.xkw.com/dksih/QBM/2019/3/26/2168985279995904/2170107255234560/STEM/37333c8c-621d-444b-ab26-3d80d9a8cf2c.jpg?resizew=268)
①装置中发生反应的化学方程式为
②阴极的电极反应式是
③某种脱硫工艺中将废气处理后,与一定量的氨气、空气反应,生成硫酸铵和硝酸铵的混合物,可作为化肥。硫酸铵和硝酸铵的水溶液pH<7,其原因用离子方程式表示为
![](https://img.xkw.com/dksih/QBM/2019/3/26/2168985279995904/2170107255234560/STEM/7a0805da-dd9f-44c3-9bcc-2bf1e446f9c1.jpg?resizew=270)
(3)脱碳。将CO2转化为甲醇的热化学方程式为:CO2(g)+3H2(g)
![](https://img.xkw.com/dksih/QBM/2019/3/26/2168985279995904/2170107255234560/STEM/69e9ff98e5934f4dafa9b22d944fab5f.png?resizew=33)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2df1bc516cf59796f7610454440afc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db27c5cbd413e4602eec72089140a0fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be61dd60262860d12f52c21dacd0088.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81fcccb8b1700a22d49b6f9bc997854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be61dd60262860d12f52c21dacd0088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5391958a61b897fafd95a81d66b30a74.png)
(ⅰ)直接氯化:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e47698e66b9d5cce991e6ec2c4459a4.png)
(ⅱ)碳氯化:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ac9656b10b91ffe1c0a44a309206d1.png)
①反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b757db3d57a2faaa468e027bcef985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2922ae637886073827dff8c97681427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cde03068deb44bd00e929884761b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a430bc430e866648a9ba303156a1d.png)
②碳氯化的反应趋势远大于直接氯化,其原因是
③对于碳氯化反应:增大压强,平衡
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018dda2daa29998ee075f51f84c274fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81fcccb8b1700a22d49b6f9bc997854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39db0d5f5533066dab682ec1bf4c39bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89649a2531e1430f44206b7fe4ee286e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca89e237a3517f381b8585a18a490a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501ac320d90eea554d83e8324c9d2cdf.png)
②图中显示,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6942ced48009542a05df878738149c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a514d343660159732a5051502d79a65d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788eaf057c2b96ec53d2cac6a6a8cb83.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a514d343660159732a5051502d79a65d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95257dd29ea83bb48c1d2f3c1b3644fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
(1)H2可通过反应CH4(g)+H2O(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
(2)对于反应C2H2(g)+H2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/209bf13a-fb7c-42e3-8f16-a922df416356.png?resizew=233)
①该反应为
②Q、M、N三点的平衡常数KQ、KM、KN的大小关系为
(3)对于反应C2H2(g)+H2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
a.降低温度 b.使用合适的催化剂
c.缩小容器容积 d.减小原料气中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc23f4888021d640bdf0e34ba7545d92.png)
(1)氢气燃烧热值高。实验测得,在常温常压下1gH2完全燃烧生成液态水,放出142.9kJ热量。则表示H2燃烧热的热化学方程式为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1069752689a00c00459c6bb016f7660.png)
(2)氢气是合成氨的重要原料。
①当合成氨反应达到平衡后,改变某一外界条件(不改变
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6eea1b03da88d479f931ffad1ad885b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1163bc05a73653778b05c45aed88addc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/24/37dbe056-8380-4f10-b84f-523a6459e22e.png?resizew=304)
图中t1时引起平衡移动的条件可能是
②氨催化氧化可以制硝酸,此过程中涉及氮氧化物,如
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d5b7ba6e61f669edfa1e8905718fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed368c8f7f4e79f601706d35c158fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/123ead330662d5881d826b83ee2f75d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/24/ff98471f-dfe1-45d7-9ee6-0391751d570a.png?resizew=229)
下列说法正确的是
a.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fc7058201e3b3429ada9930078cc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ec81024d1ba1f4b404a52656e41017.png)
b.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fc7058201e3b3429ada9930078cc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
c.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7d21f5029b8ca466e5acd1a008ccb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2482e9924ea52229e0e2d0b4c637195f.png)
d.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fc7058201e3b3429ada9930078cc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924ea4a6959ec3bcaec3f85a20982a58.png)
e.由状态B到状态A,可以用加热的方法
(1)汽车尾气净化的主要原理为:2NO(g)+2CO
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a55d09eb14ce32c34588667f973496d.png)
①反应的速率-时间图象如图甲所示.若其他条件不变,仅在反应前加入合适的催化剂,其速率时间图象如图乙所示.以下说法正确的是
![](https://img.xkw.com/dksih/QBM/2017/2/18/1626566174228480/1632496984129536/STEM/057d3f83410b4c4bacb8e315d81a27ae.png?resizew=356)
A.a1>a2B.b1<b2C.t1>t2
D.图乙中阴影部分面积更大 E.图甲中阴影部分面积更大
②若该反应在绝热、恒容的密闭体系中进行,下列示意图正确且能说明反应在进行到t1时刻达到平衡状态的是
![](https://img.xkw.com/dksih/QBM/2017/2/18/1626566174228480/1632496984129536/STEM/e2ddf674c3ea4fe3bfff14a2be650cfc.png?resizew=576)
(2)直接排放煤燃烧产生的烟气会引起严重的环境问题.煤燃烧产生的烟气含氮的氧化物,用CH4催化还原NOx可以消除氮氧化物的污染.
已知:CH4(g)+2NO2(g)⇌N2(g)+CO2(g)+2H2O(g)△H=﹣867kJ/mol
2NO2(g)⇌N2O4(g)△H=﹣56.9kJ/mol H2O(g)=H2O(l)△H=﹣44.0kJ/mol
写出CH4催化还原N2O4(g)生成N2和H2O(l)的热化学方程式:
(3)CH4和H2O(g) 在催化剂表面发生反应CH4+H2O⇌CO+3H2,该反应在不同温度下的化学平衡常数如表:
温度/℃ | 800 | 1000 | 1200 | 1400 |
平衡常数 | 0.45 | 1.92 | 276.5 | 1771.5 |
①该反应是
②T℃时,向1L密闭容器中投入l mol CH4和l mol H2O(g),平衡时c(CH4)=0.5mol/L,该温度下反应CH4+H2O⇌CO+3H2的平衡常数K=
(二)恒温时,将2molA和2molB气体投入固定容积为2L密闭容器中发生反应:2A(g)+B(g)⇌xC(g)+D(s),10s时,测得A的物质的量为1.7mol,C的反应速率为0.0225mol·L—1·s—1;40s时反应恰好处于平衡状态,此时B的转化率为20%。请填写下列空白:
(1)x=
(2)从反应开始到10s,B的平均反应速率为
(3)从反应开始到40s达平衡状态,A的平均反应速率为
(4)平衡时容器中B的体积分数为
(5)下列各项能表示该反应达到平衡状态是
A.消耗A的物质的量与生成D的物质的量之比为2∶1
B.容器中A、B的物质的量 n(A)∶n(B) =2∶1
C.气体的平均相对分子质量不再变化
D.压强不再变化
E.气体密度不再变化
(1)NO2与N2O4存在以下转化关系:2NO2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
①已知:标准状况(25℃、101kPa)下,由最稳定的单质生成1mol化合物的焓变(或反应热),称为该化合物的标准摩尔生成焓。几种氧化物的标准摩尔生成焓如表所示:
物质 | NO(g) | NO2(g) | N2O4(g) | CO(g) |
标准摩尔生成焓/(kJ·mol-1) | 90.25 | 33.18 | 9.16 | -110.53 |
则NO2转化成N2O4的热化学方程式为
②将一定量N2O4投入固定容积的恒温容器中,下述现象能说明反应达到平衡状态的是
A.v(N2O4)=2v(NO2) B.气体的密度不变
C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0d77d0a551a533008c022d57377f22.png)
③达到平衡后,保持温度不变,将气体体积压缩到原来的一半,再次达到平衡时,混合气体颜色
(2)在容积均为2L的甲、乙两个恒容密闭容器中,分别充入等量NO2,发生反应:2NO2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
![](https://img.xkw.com/dksih/QBM/2020/3/6/2413671565000704/2414340653965312/STEM/e9452ae3d969483089920e019d605a65.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/7b2f6b71-9510-436f-a09b-4eb8af36f5a7.png?resizew=206)
①T1时,反应从开始到第2min,平均速率v(O2)=
②实验测得:v正=k正c2(NO2),v逆=k逆c2(NO)·c(O2),k正、k逆为速率常数,受温度影响,下列有关说法正确的是
A.反应正向放热
B.a点处,v逆(甲)<v逆(乙)
C.k正(T2)>k正(T1)
D.温度改变,k正与k逆的比值不变
(3)硫代硫酸钠(Na2S2O3)在碱性溶液中是较强的还原剂,可用于净化氧化度较高的NOx废气,使之转化为无毒、无污染的N2。请写出NO2与硫代硫酸钠碱性溶液反应的离子方程式:
(1)甲烷、硫化氢重整反应制备氢气的原理为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba72876c2b753f5d6b9650ed7f6b64dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/d1e04b8f-a417-459f-83b7-bf94bf25ab2c.png?resizew=200)
气态原子形成1 mol
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0f5cf6d969c838e6f715e97c070526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85973e3cffda90b16b2ac900d7f914fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53e94378e531f60c481bd256bf2a553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db409145b16fb9fde2941d508d1d53da.png)
A.4056 J | B.1396 kJ | C.1506 kJ | D.20356 J |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a2f377a9185f32ed840d19d7f5d073.png)
A.体系总压强保持不变 |
B.形成4mol C-H键的同时有4mol H-O键形成 |
C.![]() |
D.NO的物质的量分数保持不变 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a5c8a45b70251a7fa0506a5b4b8ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6287dab91a4428da92c3ce8f5550973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ebf3d54a5621e98fab1594de644a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db409145b16fb9fde2941d508d1d53da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c299424fab47049e993bd886d5cd7a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6287dab91a4428da92c3ce8f5550973.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/c7db9251-e64e-47f8-b948-5946771a825d.png?resizew=257)
①曲线甲、丙表示的物质依次是
②M点时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
③20 min时达到平衡,0 ~20 min内用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8914a564676f7d13e1c1676683fec.png)
![](https://img.xkw.com/dksih/QBM/2019/11/20/2337909422342144/2338907560787968/STEM/20ba6a127f6343bc93892545197179ae.png?resizew=33)
(1)已知:CO(g)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
H2(g) +
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
则表示1mol气态甲醇完全燃烧生成CO2和水蒸气时的热化学方程式:
(2)在容积为1L的恒容容器中,分别研究在230℃、250℃、270℃三种温度下合成甲醇的规律。如图是上述三种温度下不同的H2和CO的起始组成比(起始时CO的物质的量均为1mol)与CO平衡转化率的关系。
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/20/48bab61b-6f1a-48a2-858d-a572c95cbd6d.png?resizew=236)
请回答:
①在上述三种温度中,曲线Z对应的温度是
②利用图中a点对应的数据,计算出曲线Z在对应温度下CO(g)+2H2(g)=CH3OH(g)的平衡常数 K=
③下列既能提高上述反应中 CO 的平衡转化率,又能增大反应速率的是
a.增大压强 b.降低温度 c.增大H2浓度 d.加高效催化剂
④若上述反应在某恒温恒容容器中发生,能说明该反应达到平衡的是
a.气体平均相对分子质量保持不变 b.△H1保持不变
c.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68618f2d075dcb900e8bc50c29022c5d.png)
(3)在某温度下,将一定量的CO和H2投入10L的密闭容器中,5min时达到平衡,各物质的物质的浓度(mol/L)变化如下表所示:
0min | 5min | 10min | |
CO | 0.1 | 0.05 | |
H2 | 0.2 | 0.2 | |
CH3OH | 0 | 0.04 | 0.05 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56aa51c1e974501aa93c3a8789db4e3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c24c879ab934ec361f0535dd509a9e6.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf6a7fb5929592a4fe0e95133a41c89.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a712dd33e91d6a99010d09a6b5e71a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e964f0bc1002b494b76be0cf0cf994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38ed68b2d35a1906901229010d25073.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/12/c9dc7ec3-f77d-4455-9783-ffdbbb52f9f1.png?resizew=243)
①在一个恒温恒容的密闭容器中,该可逆反应达到平衡的标志是
A.容器内各物质的浓度不随时间变化
B.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921cd44a556829314efada6087cc32f6.png)
C.容器内压强不随时间变化
D.混合气体的密度不再改变
②该反应的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e1324e1e9318481b6e7264c8595804.png)
③曲线c表示的物质为
④为提高
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
(3)由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7563a0737978200cd66739c21256d8c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c523e50f790218235eae777f95a8a724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd22b38b2826d9ea0c76f5ffd300c1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f54f19fd88e44fe8edb979945b4154.png)
时间/h | 1 | 2 | 3 | 4 | 5 |
![]() | 0.92 | 0.85 | 0.79 | 0.75 | 0.75 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a280fbf245f17a0844ed09533151d967.png)
(4)电催化
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/12/7940d955-f259-47a1-8823-ef3f53673ae8.png?resizew=272)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac388607a89021f829367da41b87354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf0295adab7a69310bf19b31f138b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1e6f69e28b8e3f0dbf9b70773a0f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf35c545549c8accbfb3ec1a58daa4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b383ae965f516f84066953093fca2a6.png)
![]() | 2 | 4 | 7 | 9 |
![]() | 0.12 | 0.11 | 0.10 | 0.10 |
请回答:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcac24008fedaf5a60db82ede52bd1a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9954db55f4a43f2a35c926035f448824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72040f8a4b9184a4ab526acca4fe9a9b.png)
(2)下列能证明该反应已经达到平衡的是
a.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168bb2150d8b53afd64f1f71b22ded59.png)
c.混合气体中各组分的物质的量不再发生变化 d.混合气体的密度不再变化。
(3)①该反应的化学平衡常数表达式为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
(4)升高温度,化学平衡常数K要
(5)该温度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896e70cd3aeec8c7ffb9e7c5350a0f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1e6f69e28b8e3f0dbf9b70773a0f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b91aa0501bceddd6783fe071ab5d4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e3c481cb7367c4f8ad89a707a6d144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63fee0ba299fd0c717d90fc23b1d8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a973df0eade99b438c2c3d39c84beb.png)