(1)①已如:2SO2(g)+O2(g)⇌2SO3(g) △H=-196.6kJ•mol-1
2NO(g)+O2(g)⇌2NO2(g) △H=-113.0kJ•mol-1
请写出NO2与SO2反应生成SO3(g)和NO的热化学力程 式
②一定条件下,将NO2与SO2以体积比1:2置于2L密闭容器中发生上述反应,下列能说明反应达到平衡状态的是
a.体系压强保持不变 b.混合气体颜色保持不变
c.SO3和NO的体积比保持不变 d.每消耗1molSO2的同时生成1mlINO2
(2)①工 业上一般以CO和H2为原料合成甲醇。该反应的热化学方程式为:CO(g)+2H2(B)
![](https://img.xkw.com/dksih/QBM/2017/12/11/1836366521630720/1836919592026112/STEM/364db5e8d8da4b69ab579fb13e70f0a3.png?resizew=33)
②在恒温条件下体积为2L的密闭容器中,将1mol CO与3molH2的混合气体在催化剂作用下发生反应生成甲醇。2min时制得生成CH3OH0.2mol,则0~2min的平均反应速率v(H2)=
③恒温恒容时,改变下列条件能加快以上反应的速率的是
a.充入惰性气体 b.增加CO的量 C.升高温度 d.减小H2的量
相似题推荐
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/5a471b7f-6da5-4ce1-8ec5-d5bd8f547908.png?resizew=260)
(1)温度为523 K时,测得上述反应中生成
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b02a203b71736b5a8970affd7e4a31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376a1437e64ed83438f790a7a40e248e.png)
(2)从图可知,有催化剂存在的是过程
(3)一定温度下(各物质均为气态),向体积为2 L的恒容密闭容器中充入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5802b17362720438368e169f55f69314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a70b85a85a4f5126e639b1e00cf46c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/088a1a51bf8e562ce50633d2fea5d29a.png)
(4)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
A.该反应原子转化率为100% |
B.该反应可用于![]() |
C.使用催化剂可以降低该反应的![]() |
D.降温分离液态甲醇和水,将剩余气体重新通入反应器,可提高![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09d38ed1cc76ede4e73670064e2e04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fde1237764f82a25d189eb1d2d365c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38ed68b2d35a1906901229010d25073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a5c6d26e9821c59de16c928dcb79f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/19f2a96e-06af-47af-91c8-bcc8be29273a.png?resizew=491)
①图1中,压强
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702479d629f919183641d90944d7bd0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b134979720dce8399d670998451f1c88.png)
②图2中,压强为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b134979720dce8399d670998451f1c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
(1)CH4与CO2经催化反应可制得合成气:CH4(g)+CO2(g)=2CO(g)+2H2(g) ΔH
已知:反应1:CH4(g)=C(s)+2H2(g) ΔH1=+75kJ/mol
反应2: 2CO(g)=C(s)+CO2(g) ΔH2=-172kJ/mol 则该催化反应的ΔH=
(2)工业上可用CO和H2合成二甲醚,其反应为: 2CO(g)+4H2(g)=CH3OCH3(g)+H2O(g) ΔH=-204.7 kJ/mol 初始条件相同时,分别在A(恒温)、B(绝热)两个容器内反应。反应初始时两容器的反应速率A
(3)工业上可用CO和H2合成甲醇,其反应为CO(g)+2H2(g)=CH3OH(g) ΔH=-90.1kJ·md。温度T时,在容积为2L的某密闭容器中进行上述反应,反应过程中相关数据如图所示。
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/b5dd363e-1bcc-4bfa-b1a0-6f2b3b3cc78e.png?resizew=235)
①下列能表明该反应已达到平衡状态的是
a v(H2)=2v(CH3OH) b c( CO)/c( CH3OH)=7: 3时
c c(H2)/c( CH3OH)=2: 1时 d 容器中气体的压强不再变化
②该化学反应10min内生成CH3OH的反应速率v(CH3OH)=
③该温度下,反应的平衡常数为
④若其他条件不变时,15min时再向容器中加入2 mol CO和 x mol H2,平衡时CO的转化率与原平衡相同,则x=
(1)已知:①2Fe(s)+O2(g)=2FeO(s)△H1=﹣544.0kJ•mol-1;
②4Al(s)+3O2(g)=2Al2O3(s)△H2=﹣3351.4kJ•mol-1。
Al和FeO发生铝热反应的热化学方程式是
(2)通常人们把拆开1mol某化学键吸收的能量看成该化学键的键能。下表是一些化学键的键能。
化学键 | C-H | C-F | H-F | F-F |
键能kJ/mol | 414 | 489 | 565 | 155 |
根据键能数据反应:CH4(g)+4F2(g)=CF4(g)+4HF(g)的反应热△H为
(3)在恒温(500K)、体积为1.0L的密闭容器中通入1.0molN2和1.0molH2发生合成氨反应N2+3H2⇌2NH3,20min后达到平衡,测得反应放出的热量为18.4kJ,混合气体的物质的量为1.6mol,该反应的热化学方程式为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a0a7e8797859917d04ff18a6a89d4c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/2e4181a3-f460-4f24-b0fe-5f65ddbfde96.png?resizew=221)
(1)反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a0a7e8797859917d04ff18a6a89d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc36e17ae25f5b5c3abdbedce82ee0ea.png)
(2)若反应在恒温恒压的密闭容器中进行。
①能说明该反应已达到平衡状态的是
a.容器内混合气体的密度不再改变
b.容器内
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
c.断开
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9eb98c9b42d32663137bbf2c3928c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab585bd224616ac46ff0e6936b0c2d68.png)
d.容器内
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5de03788b73b9050f37301ccc86573.png)
②反应中测得容器内CO2及H2O的物质的量随时间变化如图所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/0b529b12-39b4-437b-a2f0-986bc8dfe7c5.png?resizew=202)
图中b点对应的速率关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175ae491f8aab736e87cd0c7653fd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b965da982ffb1c164a39a635251bd62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae51983104603bd2f678c20bf9efe5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6e33e4f4d17cd85d9df731eff1b169.png)
(3)若反应在2L的恒温密闭容器中进行,起始时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89da6b476beffcf109589441162144f0.png)
t/min | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
n(CO2)/mol | 2.00 | 1.40 | 1.0 | 0.76 | 0.58 | 0.50 | 0.50 | 0.50 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5547f6339f968a7af10c5c0c781308a9.png)
②平衡时H2O(g)的体积分数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
(1)已知生成32 g CH3OH放出热量49 kJ,该反应的热化学方程式为
(2)在该反应中,表示该反应速率最快的是:_______
A.v(CO2)=30 mol·L-1·min-1 | B.v(CH3OH)=0.3 mol·L-1·s-1 |
C.v(H2)=0.8 mol·L-1·s-1 | D.v(H2O)=0.6 mol·L-1·s-1 |
![](https://img.xkw.com/dksih/QBM/2022/5/8/2974874417831936/2975018380926976/STEM/4ca32f2a-42ee-4c80-8cc1-ae730fcd4149.png?resizew=210)
(4)在一定温度下,将2 mol CO2与6 mol H2气体混合于2 L密闭容器中制甲醇,2 min末生成0.8 mol H2O(g),则:
①用单位时间内CO2浓度的减小来表示2 min内该反应的平均速率为
②2 min末容器中H2的物质的量浓度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589309b440187bc3138bb977edae43c0.png)
【资料查阅】①不同的催化剂对同一反应的催化效率不同;
②使用相同的催化剂,当催化剂质量相等时,催化剂的比表面积对催化效率有影响。
【实验设计】课题组为探究某些外界条件对汽车尾气转化反应速率的影响规律,设计了以下对比实验。
(1)完成以下实验设计表(表中不要留空格)。
实验编号 | 实验目的 | T/℃ | NO初始浓度mol/L | CO初始浓度mol/L | 同种催化剂的比表面积m2/g |
Ⅰ | 为以下实验作参照 | 280 | 6.00×10-3 | 4.00×10-3 | 80 |
II | 120 | ||||
Ⅲ | 探究温度对尾气转化速率的影响 | 360 | 6.00×10-3 | 4.00×10-3 | 80 |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/f300d501-6aec-4485-919d-9824d4aa9067.png?resizew=243)
(2)计算第Ⅰ组实验中,达平衡时NO的浓度为
(3)由曲线Ⅰ、Ⅱ可知,增大催化剂比表面积,汽车尾气转化速率_____________(填“增大”、“减小”、“无影响”)。
(II)随着世界粮食需求量的增长,农业对化学肥料的需求量越来越大,其中氮肥是需求量最大的一种化肥。而氨的合成为氮肥的生产工业奠定了基础,其原理为:N2+3H2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
(4)在N2+3H2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
A.2 s | B.3 s | C.4 s | D.6 s |
A.v(H2)=0.1 mol·L-1·min-1 | B.v(N2)=0.1 mol·L-1·min-1 |
C.v(NH3)=0.15 mol·L-1·min-1 | D.v(N2)=0.002mol·L-1·s-1 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
A.容器内气体密度保持不变 | B.容器内温度不再变化 | C.断裂1mol N≡N键的同时,生成6 mol N—H键 | D.2v正(H2)=3v逆(NH3) | E.反应混合气体的平均相对分子质量不变 | F.C(H2): C(N2): C(NH3)= 3:1:2 |
(1)已知高炉炼铁过程中会发生如下反应:
FeO(s)+CO(g)=Fe(s)+CO2(g) ΔH1
Fe2O3(s)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1dd362f843e640ce551ad1787c9873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8b45edad1f59a7454739675fd2de55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1dd362f843e640ce551ad1787c9873.png)
Fe3O4(s)+CO(g)=3FeO(s)+CO2(g) ΔH3
Fe2O3(s)+3CO(g)=2Fe(s)+3CO2(g) ΔH4
上述总反应在高炉中大致分为三个阶段,各阶段主要成分与温度的关系如图:
温度 | 250℃ | 600℃ | 1000℃ | 2000℃ |
主要成分 | Fe2O3 | Fe3O4 | FeO | Fe |
1600℃时固体物质的主要成分为
(2)铁系金属常用作CO加氢反应的催化剂。已知某种催化剂可用来催化反应CO(g)+3H2(g)⇌CH4(g)+H2O(g) ΔH<0。在T℃,压强为p时将1molCO和3molH2加入容积为1L的密闭容器中。实验测得CO的体积分数χ(CO)如表:
t/min | 0 | 10 | 20 | 30 | 35 |
χ(CO) | 0.25 | 0.20 | 0.17 | 0.15 | 0.15 |
①前10min内,CO的平均反应速率υ(CO)=
②达到平衡时,体系的总压强p与初始压强之比p0,p:p0=
③如图是该反应CO的平衡转化率与温度、压强的关系。
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/a757ab44-4306-4d20-aab4-cf1e29e87289.png?resizew=296)
图中温度T1、T2、T3由高到低的顺序是
【推荐2】十八大以来,各地重视“蓝天保卫战”战略。作为煤炭使用大国,我国每年煤炭燃烧释放出的大量SO2严重破坏生态环境。现阶段主流煤炭脱硫技术通常采用石灰石-石膏法将硫元素以CaSO4的形式固定,从而降低SO2的排放。但是煤炭燃烧过程中产生的CO又会与CaSO4发生化学反应,降低脱硫效率。相关反应的热化学方程式如下:
反应Ⅰ:CaSO4(s)+CO(g)⇌CaO(s)+SO2(g)+CO2(g)活化能Ea1,ΔH1=+218.4kJ·mol-1
反应Ⅱ:CaSO4(s)+4CO(g)⇌CaS(s)+4CO2(g)活化能Ea2,ΔH2=-175.6kJ·mol-1
已知活化能Ea1< Ea2。请回答下列问题:
(1)反应CaO(s)+3CO(g)+SO2(g)⇌CaS(s)+3CO2(g);△H=
(2)恒温密闭容器中,加入足量CaSO4和一定物质的量的CO气体,此时压强为p0。t min中时反应达到平衡,此时CO和CO2体积分数相等,CO2是SO2体积分数的2倍,则反应I的平衡常数Kp=
(3)下图为1000 K时,在恒容密闭容器中同时发生反应I和II,c(SO2)随时间的变化图象。请分析下图曲线中c(SO2)在0~t2区间变化的原因
(4)下图为实验在恒容密闭容器中,测得不同温度下,反应体系中初始浓度比与SO2体积分数的关系曲线。下列有关叙述正确的是
A.当体系中气体的密度不再变化时,反应I和反应Ⅱ都已达到平衡状态
B.提高CaSO4的用量,可使反应I正向进行,SO2体积分数增大
C.其他条件不变,升高温度,有利于反应I正向进行,SO2体积分数增大,不利于脱硫
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c512c047783c07da1d4f4455a4033ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876959b9f90f2379cf3d0927a8e31005.png)
![](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/92fd63e34c1e6b6ad7a52cd81bf91d79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445de53586cd7b2fe8836c385b3d3e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1a993cba0b23200101997a25d030a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff19349a80467d65564cc2953f0c978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1a993cba0b23200101997a25d030a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98183b7becdd0efb6fe8f57cdcbce983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87eab116d44e607b1ae39478603cd866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67773252101fb3704fdac88b5f3f1bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd22b38b2826d9ea0c76f5ffd300c1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b243638060de0cbf0e65164b02c2cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70697751723a407b0bbc543af07538d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4609a2c8870c0b88c751407203072fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fd63e34c1e6b6ad7a52cd81bf91d79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.容器Ⅰ、Ⅱ中正反应速率相同
B.容器Ⅰ、Ⅱ中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff19349a80467d65564cc2953f0c978.png)
C.容器Ⅰ中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
D.容器Ⅰ中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff19349a80467d65564cc2953f0c978.png)
(1)地下水中的氮污染主要是由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c41754d5a6063c49f6ee429dc68065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c41754d5a6063c49f6ee429dc68065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5572002af8e27fe754ba31ed150b094c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d51b357703e0d72654f743d611b5abdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/908dd0b209d5234171b4f5b81c870f8e.png)
(2)热解
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624cfde5889eb5269fdac20cb1b2753b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624cfde5889eb5269fdac20cb1b2753b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a5c8a45b70251a7fa0506a5b4b8ac9.png)
Ⅰ.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20274bcea875e86b0e1b95be76c18904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2a9aff9af43e5de5029f2cf1e7d7a1.png)
Ⅱ.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0718abe40951e9d493baef33641fd75b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d40a76400df8b07e2e12982bb36d07.png)
总反应:Ⅲ.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d02ed741fcde92fb02b2045c55c34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d3d85459fd9f18216c493e244e9d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b51ee6fe038c30ffb16019af67a9fe.png)
(3)将等物质的量的A、B混合于2L的密闭容器中,发生如下反应:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f9bb5d91dfe2d8b0633a1a8650eb0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7db1ec2380b4a24011e4ce569fe399c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af296f6680bc9838db6e5ca2f636a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e91b0471c85fc17fa6223e53e4550ed.png)
(4)已知可逆反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafb99f233029b6fa031d91d5de04e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4daf4694e95a68e5653082e18220384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98183b7becdd0efb6fe8f57cdcbce983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419fe04f43f89778900ed76e53df4f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98183b7becdd0efb6fe8f57cdcbce983.png)
(1)已知甲醇是一种清洁燃料,制备甲醇是煤液化的重要方向。若已知H2(g)、CO(g)、CH3OH(l)的燃烧热分别为∆H=-285.8kJ/mol、△H=-283.0kJ/mol、△H=-726.5kJ/mol,CO(g)+2H2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
(2)一定温度下,一定可以提高甲醇合成速率的措施有
a.增大起始通入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb9df6ec9f8c46480432204ea1e7225.png)
b.恒温恒容,再通入氦气
c.使用新型的高效正催化剂
d.将产生的甲醇及时移走
e.压缩体积,增大压强
(3)在恒温恒容条件下,下列说法可以判定反应CO(g)+2H2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
a.体系中碳氢单键数目不再改变
b.体系中n(CO):n(H2)不再改变
c.体系中压强或者平均摩尔质量不再改变
d.单位时间内消耗氢气和CH3OH的物质的量相等
(4)在恒压的容器中,曲线X、Y、Z分别表示在T1°C、T2°C和T3°C三种温度下合成甲醇气体的过程。控制不同的原料投料比,CO的平衡转化率如图所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/25/e2fb7dd0-0e40-4ce4-a717-1b035f0d683e.png?resizew=244)
①温度T1°C、T2°C和T3°C由高到低的顺序为:
②若温度为T3°C时,体系压强保持50aMPa,起始反应物投料比n(H2)/n(CO)=1.5,则平衡时CO和CH3OH的分压之比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e6553c72b887ca38fa8b1381a128f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5805b8c82259f32c7f04717168181791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e6553c72b887ca38fa8b1381a128f9.png)
a.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c43f55705059436421d65e170d06f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb5d519f981a09188dc18a765e8c43.png)
b.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e065f4a669b7d6da74af43f882d74e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a7aa863bf81614b79412d6005262d6.png)
c.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b35e90d9301361fd4631e9560221c133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca71cd82195c0c2d074e4aa18985275.png)
(1)上述反应体系在一定条件下建立平衡后,下列说法正确的有_______(填编号)。
A.增大的![]() |
B.反应b有助于乙烷脱氢,有利于乙烯生成 |
C.加入反应a的催化剂,可提高的![]() |
D.降低反应温度,反应a~c的正、逆反应速率都减小 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4fe034ddc5dc5c445012d675b82738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/8e71bcb7-06ee-464d-ad12-56cf42d052bb.png?resizew=407)
(3)乙烷在一定条件可发生如下反应:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5269bd8bcc27118df7fe387dc76f8998.png)
①提高该反应平衡转化率的方法有
②一定温度下,原料组成为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6443cf2eed2f0335efa1cbf6f1db67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5805b8c82259f32c7f04717168181791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febe6ae46e15c2df1772464535e1ce23.png)