![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
Ⅰ.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f1b323c174706865bae3296e1dd96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea398fccf5c37f61ec2f101e4522726.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/76b5129e-b8aa-48cb-b0c9-92d5688a3546.png?resizew=537)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b3281fcbda10088daeb39828d464b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2991ed4b9ffc6213cb0f5899ea7b5a.png)
(2)分别向等温等容、绝热等容(起始温度相同)的密闭容器中加入0.2 mol的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe2066525aa0616cf44d051d57bf713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec90b75a6c2b4fdefb763462a2b5692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec90b75a6c2b4fdefb763462a2b5692.png)
Ⅱ.在一定条件下
![](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/3be3e8749ff647f1860635d0e63e5eef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3281ad6d01cfcfdbb5d8184e30ff97.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b1d40ebbc1f613d901159f2ee2f045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc9040f51ad72bfacb55f5ffbc32b81.png)
向恒压密闭容器中充入物质的量之比为1∶4的
![](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/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387d40eacc8e552eb0c520b1f755dd60.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/ef716d99-37cd-42e4-9a53-99f77b980e84.png?resizew=289)
(3)其中表示平衡时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff19349a80467d65564cc2953f0c978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7644a7769a5fa1bdab46cc0b2dee2861.png)
(4)若在一定温度下,投料比例相同(充入物质的量之比为1∶4的
![](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/ce4eb1eb3bfbb5bd39433a44232816e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98183b7becdd0efb6fe8f57cdcbce983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d38a15c34acaf1c4aed775468b5797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba928fa185ace46db111aa6ab1d77b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4eb1eb3bfbb5bd39433a44232816e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d38a15c34acaf1c4aed775468b5797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba928fa185ace46db111aa6ab1d77b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff3dcd5e9a094a60ff298af4b5d9ec14.png)
相似题推荐
已知在常温常压下反应的热化学方程式:
①CO(g)+2H2(g)
![](https://img.xkw.com/dksih/QBM/2017/4/21/1670404742955008/1671436191539200/STEM/b83b8101b31d42478896f14b49bd05c2.png?resizew=35)
②CO(g)+H2O(g)
![](https://img.xkw.com/dksih/QBM/2017/4/21/1670404742955008/1671436191539200/STEM/b83b8101b31d42478896f14b49bd05c2.png?resizew=35)
写出由二氧化碳、氢气制备甲醇的热化学方程式:
Ⅱ. 已知甲醇制备的有关化学反应以及在不同温度下的化学反应平衡常数如下表所示:
化学反应 | 平衡 常数 | 温度 | ||
500℃ | 700℃ | 800℃ | ||
2H2(g) + CO(g) ![]() | K1 | 2.5 | 0.34 | 0.15 |
H2(g) + CO2(g) ![]() | K2 | 1 | 1.7 | 2.52 |
3H2(g)+CO2(g)![]() | K3 |
请回答下列问题:
(1)反应①是
(2)观察①②③可推导出K1、K2、K3之间的关系,则K3=
(3)某温度时,反应①式中各物质的平衡浓度符合下式:20×c(CH2OH)=3×c(CO)×c3(H2),试判断此时的温度为
(4)500℃时测得反应③在某时刻H2(g)、CO2(g)、CH3OH(g)、H2O(g)的浓度分别为0.4 mol· L-1、1 mol·L-1、0.5 mol·L-1、0.4 mol·L-1mol۰L-1,则此时V(正)
(5)对应反应③,一定条件下将H2(g)和CO2(g)以体积比3:1置于恒温恒容的密闭容器发生反应,下列能说明该反应达到平衡状态的有
A.体系密度保持不变
B.H2和CO2的体积比保持不变
C.混合气体的平均相对分子量不变时,反应一定达到平衡状态
D.当破坏CO2中2个碳氧双键,同时破坏H2O中的2个氧氢键,反应一定达到平衡状态
a.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/48782155-a941-4ed3-841a-b8ab93b3ba60.jpg?resizew=351)
b.①N2(g)+O2(g)===2NO(g) ΔH1
②2CO(g)+O2(g)===2CO2(g) ΔH2=-565 kJ·mol-1
(1)ΔH1=
(2)在催化剂作用下NO和CO转化为无毒气体,写出反应的热化学方程式:
Ⅱ. SO2、CO、NOx是对环境影响较大的气体,对它们的合理控制和治理是优化我们生存环境的有效途径。请回答下列问题:
(1)已知25℃、101 kPa时:
①2SO2(g)+O2(g)
![](https://img.xkw.com/dksih/QBM/2018/7/2/1979944475623424/null/STEM/b6cb2b3042b545fd8f25c402fdd80b59.png?resizew=17)
②H2O(g)===H2O(l) ΔH2=-44 kJ·mol-1
③2SO2(g)+O2(g)+2H2O(g)===2H2SO4(l) ΔH3=-545 kJ·mol-1
则SO3(g)与H2O(l)反应的热化学方程式是
(2)若反应2H2(g)+O2(g)===2H2O(g)
ΔH=-241.8 kJ·mol-1,根据下表数据求x=
化学键 | H—H | O=O | O—H |
断开1 mol化学 键所需的能量/kJ | 436 | x | 463 |
Ⅰ.已知汽车气缸中氮及其化合物发生如下反应:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b9a8e629bdee833b29d5238020d644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aebc1797a4f369ff9612e4963f96e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a2e6257ce02e55ed625e1e682cd8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3b87dbd5e79622e181601b641fa9f99.png)
(1)则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792ec4bf20efce9e23ad0244b2fb937c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361f59abc7521c880d24d7eb47015b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940db2e9b806d2c9dbedcf14f05b9480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0afc6977298d92458fb20234695ce22.png)
Ⅱ.四氧化二氮
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfdc0ff0953288243272e13ddd5f2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d8c4d9e0eadbb0deb153f3f6872321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdbcfa56af123635b4f5bae5908df69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2678f7165a3facef71d15a596b3d9f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4fb62d809cb43c9db4996658a310d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e7da7240f24a37ff2d4363fd3363a4.png)
![](https://img.xkw.com/dksih/QBM/2022/5/4/2972353449730048/2972757854502912/STEM/db6469d9-4f6c-42c3-853e-27e84480e5b9.jpg?resizew=269)
(2)D点v(正)
(3)A、B、C点中平衡常数K的值最大的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85242e455a682eb4aa47abd6fb6af8fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4fb62d809cb43c9db4996658a310d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0746b442f8f44aa4813f545cf84c472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4fb62d809cb43c9db4996658a310d4.png)
(4)若其条件不变,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c528d12b1e184ecd2f6e27c9202bff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a6c15428939414834c004df67176f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a6c15428939414834c004df67176f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/24/0df95979-1a4b-4902-98c3-e9217e5bd10c.png?resizew=83)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/24/e2ab4e6c-4dac-40fc-bbf0-3d9dba60a1b5.png?resizew=61)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a590aae2722402544164154097afa7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/24/7d17250d-1570-4938-b938-5574a84f7dcf.png?resizew=84)
(1)已知:
化学键 | C-H | C-C | C=C | H-H |
键能/kJ/mol | 412 | 348 | 612 | 436 |
计算上述反应的△H=
(2)500℃时,在恒容密闭容器中,充入a mol乙苯,反应达到平衡后容器内气体的压强为P;若再充入bmol的乙苯,重新达到平衡后容器内气体的压强为2P,则a
(3)工业上,通常在乙苯(EB)蒸气中掺混N2(原料气中乙苯和N2的物质的量之比为1︰10,N2不参与反应),控制反应温度600℃,并保持体系总压为0.1Mpa不变的条件下进行反应。在不同反应温度下,乙苯的平衡转化率和某催化剂作用下苯乙烯的选择性(指除了H2以外的产物中苯乙烯的物质的量分数)示意图如下:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/24/3ff13e5e-4ca3-4aba-808d-d1b480fd4a86.png?resizew=287)
①A,B两点对应的正反应速率较大的是
②掺入N2能提高乙苯的平衡转化率,解释说明该事实
③用平衡分压代替平衡浓度计算600℃时的平衡常数Kp=
④控制反应温度为600℃的理由是
反应Ⅰ:CaSO4(s)+CO(g)
![](https://img.xkw.com/dksih/QBM/2020/5/4/2455684367114240/2456097837056000/STEM/1977fb532e4f456f9cbc074fa18c9e62.png?resizew=15)
反应Ⅱ:CaSO4(s)+4CO(g)
![](https://img.xkw.com/dksih/QBM/2020/5/4/2455684367114240/2456097837056000/STEM/1977fb532e4f456f9cbc074fa18c9e62.png?resizew=15)
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。tmin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)图1为1000K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。请分析图1曲线中c(SO2)在0~t2区间变化的原因
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/7730bd5d-41c5-4bae-89da-b8e09628311e.png?resizew=238)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/52d3e694-fedf-4b47-8940-cca05440b748.png?resizew=326)
图1 图2
(4)图2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
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ac0a65df268b5fe8b7cd958d06b53f.png)
A.当气体的平均密度不再变化,反应I和反应Ⅱ同时达到平衡状态
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
D.向混合气体中通入氧气(不考虑与SO2反应),可有效降低SO2体积分数,提高脱硫效率
(5)图1中,t2时刻将容器体积减小至原来的一半,t3时达到新的平衡,请在图1中画出t2-t3区间c(SO2)的变化曲线
(1)已知下列反应的热化学方程式:
直接脱氢
反应①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5634d4329c6536b19aad047d450608eb.png)
反应②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4e96d742092ef816bab101e85e4e19.png)
计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e762a80c1216318892c2155bef79681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f650ce5871f03b9219f0f44432892fed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/507305ce1c3525e9b935e7c92b3a0ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
(2)已知下列键能数据,结合反应①数据,计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905fe72caa5d7646df7666d5d9239a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
化学键 | ![]() | ![]() | ![]() |
键能![]() | 347.7 | 413.4 | 436.0 |
(3)一定温度下,向密闭容器中充入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331ed4aacc43e58772e9677742dafdd5.png)
①若该反应在恒压环境中进行,常通过向体系中通入稀有气体Ar的方式来提高CH3CH2CH3的平衡转化率,原因是
②若该反应在恒容环境中进行,用压强传感器测出容器内体系压强随时间的变化关系如图a所示,计算该温度下反应①的平衡常数Kp=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70a6fcb37772d09130c9cfc6d681f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664aa41ab989d20e9d13587f6677a6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46460f6ae75fca5297b4e72c7ce845cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d43433030bcbb586ad3a9acd30c144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ec3cab3fbecb07c55842456144e80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15095a7e4fe35c4cff56b5a29df00c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a32c8776d9a5c0b518be4820cce13e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e762a80c1216318892c2155bef79681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3c630ae8705f89a1062f6147caaa56.png)
A.V2O5先吸附氧气,吸附的氧气直接与吸附的丙烷反应
B.V2O5直接氧化吸附的丙烷,吸附的氧气补充V2O5中反应掉的氧
C.V2O5催化丙烷脱氢过程中,碳氢键的断裂是可逆的
I.某些常见化学键的键能(将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26edabbe2c43af4e74203ad34c4eff2d.png)
化学键 | ![]() | ![]() | ![]() | ![]() |
键能/(![]() | 414 | 803 | 463 | 498 |
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70697751723a407b0bbc543af07538d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
II.实验室模拟热气循环法合成尿素,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3855dcc64a8d2d84cce2105dc481531c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3e12970c4e46404fd80963b58bda7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc968e1894094ff03179acd5d1c09df6.png)
为了验证反应温度、催化剂的比表面积对化学反应速率的影响规律,某同学设计了三组实验,如表所示。
实验编号 | ![]() | ![]() ![]() | ![]() ![]() | 催化剂的比表面积/(![]() |
① | 280 | ![]() | ![]() | 82 |
② | ![]() | ![]() | ![]() | ![]() |
③ | 350 | a | ![]() | 82 |
(2)控制变量是科学研究的重要方法,因此表中数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b7ee51e6579d4f5af7852ef658cc21.png)
(3)对比实验①③,目的是验证
(4)一定温度下,向1L密闭容器中充入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5badc3a201007c2c5bd48961c8dce49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c054e138b7ce4ac97cf65478970af306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568d54f4dca27299a01c34524d9f0415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7982871cc37a5912b311930fb6393472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669f47e835194dff796421c00c5a1c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5547f6339f968a7af10c5c0c781308a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3855dcc64a8d2d84cce2105dc481531c.png)
(5)下列情况中,一定能说明上述反应达到平衡的是___________(填标号)。
A.![]() |
B.反应体系中气体的密度保持不变 |
C.反应消耗![]() ![]() |
D.![]() |
(6)“碳呼吸电池”是一种新型化学电源,其工作原理如图。当得到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b62d91300ef0ed2c54c98e9fa1216d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/4/a9d10892-7bde-4504-854a-c752b221a6b1.png?resizew=324)
(1)已知:①反应I:4NH3(g)+3O2(g)
![](https://img.xkw.com/dksih/QBM/2018/8/13/2009509397258240/2010168855568384/STEM/637bf9beb66746998b6dfa5d9e506e1c.png?resizew=27)
②H2的燃烧热ΔH2=-285.8 kJ.mol-1
③水的气化时ΔH3=+44.0 kJ.mol-1
反应I热力学趋势很大(平衡常数很大)的原因为
(2)在Co-Al催化剂体系中,压强P0下氨气以一定流速通过反应器,得到不同催化剂下氨气转化率随温度变化曲线如下图,活化能最小的催化剂为
(3)温度为T时,体积为1L的密闭容器中加入0.8molNH3和0.1molH2,30min达到平衡时,N2体积分数为20%,则T时平衡常数K=
(4)以KNH2为电解质溶液电解NH3,其工作原理如下图所示,则阳极电极反应为
【推荐3】硝酸是基本化学工业的重要产品之一、
(1)已知:N2(g)+O2(g)=2NO(g);ΔH=+180.5kJ·mol-1
2H2(g)+O2(g)=2H2O(g);ΔH=-483.6kJ·mol-1
N2(g)+3H2(g)=2NH3(g);ΔH=-92.4kJ·mol-1
则4NH3(g)+5O2(g)=4NO(g)+6H2O(g)的ΔH=
(2)生产硝酸的第二步反应是2NO+O2=2NO2,在0.1MPa和0.8MPa压强下,NO的平衡转化率α随温度的变化如图所示,反应在400℃、0.8Mpa时的α=
(3)将amolNO,bmolO2通入反应器中,在温度T,压强P条件下进行反应。平衡时,若NO的转化率为m,则NO2的分压为
(4)研究表明NO和O2的反应分两步进行
①2NO=(NO)2ΔH<0
②(NO)2+O2=2NO2ΔH<0
NO和O2反应速率公式为v=k·K·p2(NO)·p(O2),K为反应①的平衡常数,k为反应②速率常数(k随温度T升高而增大)。当其他条件不变时,研究NO达到一定转化率时,温度与时间的关系如下表所示。
压强/(×105pa) | 温度/℃ | NO达到一定转化率所需时间/s | ||
50% | 90% | 98% | ||
1 | 30 | 12.4 | 248 | 2830 |
90 | 25.3 | 508 | 5760 | |
8 | 30 | 0.19 | 3.88 | 36.4 |
90 | 0.59 | 7.86 | 74 |
根据信息,对于反应:2NO+O2=2NO2,当其他条件一定时,温度对反应速率的影响是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3abf8e723192d67a7dbfed9bc4b8a91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8a8ecf7b109131511e4658fbb14a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff117f9c996f80c70b8c48144adc6518.png)
(1)已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e362e34b4768904212b318e3e6f6ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdcbde3a4dce31167a8da09c195a925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f13608ab2892cd322bcb2317574c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf99935e89e0cb98d9221d871c57d739.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970ede1b912fa8414094f27120a17e4d.png)
②温度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb03b896c24f2fbebbd9d719d24b7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121bfd1f4c5b2c98189a26421fd653ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942ada4ec529970edaf225dc1ed53d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd29a253d17847945e1007e090a2600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942ada4ec529970edaf225dc1ed53d87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/27/51214db6-6a2d-4af3-b918-8bea55b3a4ba.png?resizew=197)
(2)在恒压条件下,将NO和CO置于密闭容器中发生反应Ⅰ,在不同温度、不同投料比
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e799c612b2a0070c5eac8a9715b233eb.png)
![]() | 300K | 400K | 500K |
1 | 15% | 24% | 33% |
2 | 10% | 18% | 25% |
②下列措施有利于提高CO平衡转化率的是
A.升高温度同时增大压强
B.继续通入CO
C.加入高效催化剂
D.及时将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
③500 K时,将投料比为2的NO与CO混合气体共0.9 mol,充入一装有催化剂且体积为3 L的密闭容器中,5 min时反应达到平衡,则500 K时该反应的平衡常数K为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5547f6339f968a7af10c5c0c781308a9.png)
(1)合成氨工业中,合成塔中每产生2 mol NH3,放出92.2kJ热量。
①工业合成氨的热化学方程式是
②若起始时向容器内放入2 mol N2和6 mol H2,达平衡时放出的热量为Q,则Q(填“>”“<”或“=”)
③已知:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/6eafac9b-f5bb-4845-b963-f91da78665c2.png?resizew=319)
1 mol N-H键断裂吸收的能量等于
④理论上,为了增大平衡时H2的转化率,可采取的措施是
a. 增大压强 b. 使用合适的催化剂
c. 升高温度 d. 及时分离出产物中的NH3
(2)原料气H2可通过反应CH4(g)+H2O(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98feedde5546db26eb490641ba3a817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2c0bef7199b1549bf1e2601546c5b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/1d8de255-933f-491d-8839-4b48ea534b46.png?resizew=245)
(3)原料气H2还可通过反应CO(g)+H2O(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98feedde5546db26eb490641ba3a817.png)
①T℃时,向容积固定为5L的容器中充入1 mol水蒸气和1 mol CO,反应达平衡后,测得CO的浓度为0.08mol•L-1,则该温度下反应的平衡常数K为
②保持温度仍为T℃,改变水蒸气和CO的初始物质的量之比,充入容器进行反应,下列描述能够说明体系处于平衡状态的是
a. 混合气体的平均相对分子质量不随时间改变
b. 混合气体的密度不随时间改变
c. 单位时间内生成a mol CO2的同时消耗a mol H2
d. 混合气中n(CO) :n(H2O) :n(CO2) :n(H2)=1 :16 :6 :6
(4)工业上以NH3和CO2为原料合成尿素[CO(NH2)2],反应的化学方程式为2NH3(g)+CO2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98feedde5546db26eb490641ba3a817.png)
T/℃ | 165 | 175 | 185 | 195 |
K | 111.9 | 74.1 | 50.6 | 34.8 |
![](https://img.xkw.com/dksih/QBM/2023/11/27/3376893513211904/3448384131768320/STEM/65af414b168449a9a5f6f816a592fab0.png?resizew=14)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd65afbe12d116094a4ae38326c7e382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/3829f95c-012e-4481-a26c-59621d979c26.png?resizew=237)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f0e4c8a7e0c8b9f099a01d6d1ace44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d92a9a01739ffe21a97e84c7c62c823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf9f024ee17a5595763784914fe9b28.png)
(1)0~3 min,平均速率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d244fd0ea098426abb4e638daff38b31.png)
(2)①若保持容器体积不变.向容器中充入Ne,则该反应达到平衡的时间t
②若调节容器的体积为2L,则该反应中CO和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a5c6d26e9821c59de16c928dcb79f0.png)
(3)第3min时,正、逆反应速率的大小关系为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175ae491f8aab736e87cd0c7653fd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b965da982ffb1c164a39a635251bd62e.png)
(4)能说明上述反应达到平衡状态的是______(填字母)。
A.反应中CO与![]() |
B.混合气体中CO的浓度不再改变 |
C.单位时间内生成1 mol ![]() ![]() |
D.混合气体的平均相对分子质量不随时间的变化而变化 |
(5)平衡时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
(6)反应达到平衡时,体系内压强与开始时的压强之比为
(7)反应达到平衡后,若降低反应的温度,则该反应的逆反应速率将