(1) CH3OCH3和O2发生反应I:CH3OCH3(g)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
已知:CH3OCH3(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98feedde5546db26eb490641ba3a817.png)
CH4(g)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
H2(g)+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
①则反应I的△H=
②保持温度和压强不变,分别按不同进料比通入CH3OCH3和O2,发生反应I。测得平衡时H2的体积百分含量与进料气中n(O2)/n(CH3OCH3)的关系如图所示。当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f58d432e0c517f63d6ed9203504c3c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/bf5a7688-f98b-45bc-943f-71876ffd26be.png?resizew=163)
A.过量的O2起稀释作用
B.过量的O2与H2发生副反应生成H2O
C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f58d432e0c517f63d6ed9203504c3c.png)
(2)T℃时,在恒容密闭容器中通入CH3OCH3,发生反应II:CH3OCH3(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98feedde5546db26eb490641ba3a817.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/a07199b7-8a7d-45d3-a6ea-262beedaee14.png?resizew=248)
①t=400 s时,CH3OCH3的转化率为
②达到平衡时,测得体系的总压强P总= 121.6 kPa,则该反应的平衡常数Kp=
③该温度下,要缩短达到平衡所需的时间,除改进催化剂外,还可采取的措施是
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/72c0cf5a3cbf719fa0ac2ce6d5f50886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8392945bdc69686e7b8f1bec3733fa.png)
(1)反应A的平衡常数表达式是
(2)已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90e1a9ea5fd212a5f91c9f6fcfb1b47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ed5831d9178babb53b87ae186d9e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7423630861101a3e1f5339938569ee72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6704e1120ed0650728a3275896ee938b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8392945bdc69686e7b8f1bec3733fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ed5831d9178babb53b87ae186d9e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6704e1120ed0650728a3275896ee938b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8392945bdc69686e7b8f1bec3733fa.png)
(3)在体积为1L的恒容密闭容器中发生反应A,如图是在三种投料,即[n(CO2),n(H2)]分别为:[1mol,3mol]、[1mol,4mol]、[1mol,6mol]下,反应温度对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://img.xkw.com/dksih/QBM/2022/1/25/2902193621336064/2903710256193536/STEM/e4a6d700-b8cc-4377-b769-8542754b7619.png?resizew=329)
①反应A的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8392945bdc69686e7b8f1bec3733fa.png)
②曲线c对应的投料是
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa24a8004d0095ac9d9382113732970.png)
(4)甲醇燃料电池(NaOH作电解质溶液)负极的电极方程式为
(5)在一定条件下,利用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a5c6d26e9821c59de16c928dcb79f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734142aa308989b706f37400a2a6cc27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.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/2022/1/25/2902193621336064/2903710256193536/STEM/3b870c9f-be74-480c-878f-a31e1a3d7a92.png?resizew=379)
由图象可知,升高温度,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
(1)燃煤烟气中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973f6b90d1f7b6a69da4304d0637d5d6.png)
②载人航天器内,常用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d41aac127e9d4d596c24a2bdfdf0367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f935c5e4a76d7b3eadc6b1438c8ba252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
(2)电化学法还原二氧化碳,不仅能缓解温室效应还能得到乙烯。
①已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7997c06f67e245400c608c77dc881d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa240a3bfd42776c8e56fc32949b5d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e08fcb07973e5576fd79a750f260dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ff4ddf57d20792cc8bdaf3fd891b1f.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41c2ba79b95d201795915dd2625d74a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/507305ce1c3525e9b935e7c92b3a0ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
②电化学法还原二氧化碳为乙烯原理如图所示。
③铜作阴极能提高还原产物乙烯的选择性,水溶液中二氧化碳在铜表面还原为乙烯的机理如图所示(参与反应的水分子及其它生成微粒未画出)。下列有关说法不正确的是
B.二氧化碳还原产物有甲烷和乙烯
C.两个反应历程都是先加氢再除氧
D.两个反应历程都出现碳氧键的断裂与碳碳键的形成
(1)下列变化过程,属于放热反应的是
①浓
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc7bcfe5cacce080d9a3d2ccf9366e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39db0d5f5533066dab682ec1bf4c39bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e28d425e01979a1e9b9eef10c99555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e5e50a62c390ae7f7cb638753931b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
(2)已知:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce51548ca8c59a15fc6b37bb9c51899c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f399e40a0b9a79d882cf60b515fb7476.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2171a7d34269c9c603f97f1cc2f4c4bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b6176c7e00beb93c44335ff628bf96.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd467ba74fa3b7cfb5fbe3f7e3ca930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c60fa294b170d15fce7360dde530c4.png)
则固态碳和水蒸气反应生成CO和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
(3)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。表中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 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26705e6a9bb3c9fc7902e6b1e7391a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a8ea59521d16206aae2ca5a5312186.png)
(4)已知稀溶液中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63251cba2ab29d7a56be2320520f0d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a877c875caa74a88c8d5ee2547ccbff8.png)
①则稀醋酸与稀氢氧化钠溶液反应生成1mol水时放出的热量比57.3kJ
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a8ea59521d16206aae2ca5a5312186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b7a40ff4bdcc801404f14722b69fbe.png)
②某化学兴趣小组用50mL
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af75ddc51f9de4b790e991119c6caa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6ca890b5e2541ecbad3bec8b33d93f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b59cfaabe4cd7ccc5bd3042fa3f58da.png)
A.盐酸与NaOH溶液混合后立即记录温度
B.分三次将盐酸溶液缓慢倒入NaOH溶液中
C.用量筒量取NaOH溶液时仰视读数
D.使用环形玻璃棒搅拌
③标准状况下,3.36L 仅由C、H两种元素组成的某气体质量为4.5g,在25℃和101kPa下完全燃烧生成
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c299424fab47049e993bd886d5cd7a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f2f4fd4e9e7824d099043feae03129.png)
④2022年北京冬奥会将用绿氢(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/d94f5bae-7039-4d64-b318-aad8fac7ea26.png?resizew=400)
反应Ⅰ:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e77e15fbefa64b924f3d92c37a52689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5017ec6f87771ab8d794e330df569128.png)
反应Ⅱ:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ea6b8ecf63beba1c588153ac9b2040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c7bf1d8ac1a0098c0abd664bb30883.png)
反应Ⅲ:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4255dea88ee23a241f0a3ed9f19ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a69e65d8e227a11e4ce8a80b7a55e4.png)
则反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08030c29d84728c92b73008bbd7642cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03fc493003e2b2b14138686eaee0687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/5c9b6d2c-1500-440e-8512-f341d9342195.png?resizew=164)
(2)锌与盐酸反应过程中,如果反应太激烈,为了减缓反应速率而又不减少产生氢气的量,他在盐酸中分别加入等体积的下列溶液,你认为可行的是
A.CH3COONa B.NaNO3溶液 C.KCl溶液 D.Na2CO3溶液
(3)为了验证Fe3+与Cu2+氧化性强弱,下列装置能达到实验目的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/58e160c2-fa64-4988-8868-cfef7b1faa9a.png?resizew=385)
(4)氢氧燃料电池,是一种高效无污染的清洁电池它分碱性(用KOH做电解质)和酸性(用硫酸做电解质)氢氧燃料电池;
①如果是碱性燃料电池则负极反应方程式是:
②如果是酸性燃料电池则正极反应方程式是:
(1)合成氨反应N2(g)+3H2(g)
![](https://img.xkw.com/dksih/QBM/2018/7/19/1991770927972352/1997430665617408/STEM/3e103db8595041b8b3dc8701a3d625de.png?resizew=33)
(2)已知:O2(g) = O2+(g)+e-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595597d25112f247753397d25bf5080.png)
PtF6(g)+e-=PtF6-(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595597d25112f247753397d25bf5080.png)
O2PtF6(S)=O2+(g)+PtF6-(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595597d25112f247753397d25bf5080.png)
则反应O2(g)+PtF6(g) = O2+PtF6-(s)的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6595597d25112f247753397d25bf5080.png)
(3)一定温度下在恒容密闭容器中N2O5可发生下列反应:2N2O5(g)
![](https://img.xkw.com/dksih/QBM/2018/7/19/1991770927972352/1997430665617408/STEM/51385d1942c9401487f38daeb3dc207a.png?resizew=33)
①反应达到平衡后若再通入一定量氦气,则N2O5的转化率将
②下表为反应在T1温度下的部分实验数据:
时间/s | 0 | 500 | 1000 |
c(N2O5)/mol·L—1 | 5.00 | 3.52 | 2.48 |
则500s内N2O5的分解速率为
③在T2温度下,反应1000s时测得NO2的浓度为4.98mol·L—1,则T2
(1)氨热分解法制氢气
相关化学键的键能数据
化学键 | N≡N | H-H | N-H |
键能E/(kJ•mol-1) | 946 | 436.0 | 390.8 |
反应2NH3(g)⇌N2(g)+3H2(g) △H=
(2)用NH3可消除NO污染,反应原理为:4NH3+6NO
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a55d09eb14ce32c34588667f973496d.png)
![](https://img.xkw.com/dksih/QBM/2021/11/7/2845998457257984/2846138643382272/STEM/16f45071-edc7-45a8-b24b-34882f746048.png?resizew=216)
①曲线a对应的n(NH3):n(NO)=
②曲线c中NO的起始浓度为4×10-4mg/m3,从A点到B点经过0.8s,该时间段内NO的脱除速率为
③由图可知,无论以何种比例反应,在温度超过900℃时NO脱除率都会骤然下降,可能的原因是
(3)利用电解原理,将氨转化为高纯氢气,其装置如图所示。
![](https://img.xkw.com/dksih/QBM/2021/11/7/2845998457257984/2846138643382272/STEM/d7298491-1e5b-463c-9805-ae84dd112b06.png?resizew=217)
①电解过程中OH-的移动方向为
②阳极的电极反应式为
(1)氨气是一种重要的化工原料,氨态氮肥是常用的肥料。写出实验室制备氨气的化学方程式
(2)已知几种物质的相对能量如下:
物质 | ||||
相对能量/ | 475.5 | 283.0 | 393.5 | 0 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e1ec819756ddf8201b284a6356f1af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8d41defa28f4f06acefb19b1286146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4092baf09c01da010acdcd50eefa09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c299424fab47049e993bd886d5cd7a36.png)
(3)一定温度下,向恒容密闭容器中充入2mol
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e1ec819756ddf8201b284a6356f1af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1f36181d6abf96e7a2b90c58ee2c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2765188d2d01c9a381b5d5d6869b8d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e1324e1e9318481b6e7264c8595804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5547e0098754a8e3f31bae5d5bcb4dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/04b1dae9-edf6-4e9e-b3c2-8f3e9304b632.png?resizew=420)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e1324e1e9318481b6e7264c8595804.png)
②下列情况表明该反应达到平衡状态的是
A.混合气体的密度不再改变 B.相对分子质量不再改变
C.NO和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6149377ee90af173136c0119993ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399d3afa7d61d212b666381c8df20576.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fdaa192f0623277463886f15a815c2.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e9438580f9be20006d85b3a5c36404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e9438580f9be20006d85b3a5c36404.png)
(1)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/a8f23bc1442434bbf3b00e0391ecae03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b7985e83766e00cd3f43a2cf0fda00.png)
写出NO与O2反应生成NO2的热化学方程式
(2)利用反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde256e12ea83c28b4b3579538ecf875.png)
![](https://img.xkw.com/dksih/QBM/2021/1/28/2645885236305920/2651004739788800/STEM/af45ccec-b0ce-4ef4-bb2a-fb63d403f037.png?resizew=284)
①下列说法正确的是
A.当容器内各组分浓度c(NO):c(CO):c(N2):c(CO2)=2:2:1:2时,体系达到平衡
B.图象中B点正反应速率大于F点正反应速率
C.当温度、压强一定时,在原料气中加入少量稀有气体,有利于提高反应物平衡转化率
D.低温有利于提高NO的平衡转化率
②压强为20 MPa、温度为T2下,若反应进行到20 min达到平衡状态,此时容器的体积为4 L,该温度下平衡常数K=
③该反应达到平衡后,为提高反应速率同时提高NO的转化率,可采取的措施有
a.增大NO浓度 b.压缩容器体积 c.移去部分N2 d.改用高效催化剂
④在相同条件下,提高CO浓度有利于增加脱氮率。现在一密闭容器中,恒温恒容条件下发生上述反应,请在图中画出平衡时N2体积分数随起始
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270316560763471facb9eaac5e4cfb2f.png)
![](https://img.xkw.com/dksih/QBM/2021/1/28/2645885236305920/2651004739788800/STEM/e2e0151f-565c-48ed-b913-4c47f70d55d3.png?resizew=188)
(3)在一定实验条件下模拟该反应,测得NO的平衡转化率随着起始
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270316560763471facb9eaac5e4cfb2f.png)
(1)探究反应条件对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1388518a0edf247b213523fd87501c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441c039b61c8862ae285db3042391b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dabf3433f95b16485024c4eede9f2a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65cf47a1d91a7c0595f90ea90bc02d0.png)
编号 | 反应温度![]() | ![]() ![]() | 水![]() | ![]() ![]() | 乙 |
① | 25 | 10.0 | 0 | 10.0 | x |
② | 25 | 5.0 | a | 10.0 | y |
③ | 40 | 10.0 | 0 | 10.0 | z |
若上述实验①②是探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc315945f11a750481f3b1cd01750dd.png)
(2)氨气具有广泛的用途,工业上合成氨的反应是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b57978ac9dbc5e8d00c518905861e20.png)
化学键 | ![]() | ![]() | ![]() |
键能![]() ![]() | 436 | 945 | 391 |
①则合成氨的热化学方程式是
②一定温度下,在一个容积固定的密闭容器中若反应起始时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93bc7e68913c16057920f272ff77398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c552a38df2fafa6628c990d1969805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f0ae72b13dc938c305cda10cdedac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c552a38df2fafa6628c990d1969805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe2066525aa0616cf44d051d57bf713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b158f179665d58edbf3faf9e62bbd72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7c457a4fe4585178e9e316f3ae38f6.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ca8d916d2d7deb2afa57f8a95495e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ef0da009d8dc12c00c5e8189ac3e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ecb89aee5c75c2345abaedc2cabaa1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee263c519cc6ebfa71c976ae9d93075e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c08557e14d9116b555113e1a7c4d3e.png)
A.向正方向进行 B.向逆方向进行 C.处于平衡状态
(4)在固定体积的密闭容器中,进行如下化学反应:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e84c1a4eeaf58529eb7ff6a95ac00d.png)
![]() | 400 | 300 |
平衡常数K | ![]() | ![]() |
①判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aebc1797a4f369ff9612e4963f96e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde368c6ccef4dd2865f7e6163f45cce.png)
②合成氨在农业和国防中有很重要的意义,在实际工业生产中,常采用下列措施,其中可以用勒夏特列原理解释的是
A.采用较高温度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d8179af4a1692c7409bea3e2a9e8e2.png)
C.用铁触媒加快化学反应速率 D.采用较高压强
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dfab1e2a4c0d279624731824fd88eaa.png)
![](https://img.xkw.com/dksih/QBM/2017/12/22/1844048916119552/1845297347878912/STEM/919f03a8-d437-4636-a52b-1ad12bd2ce65.png?resizew=110)
![](https://img.xkw.com/dksih/QBM/2017/12/22/1844048916119552/1845297347878912/STEM/65d102aa-afc8-4738-97cb-4428dd3449ad.png?resizew=158)
请回答下列问题:
(1)已知乙苯(g)、苯乙烯(g)的燃烧热分别为a kJ·mol-1、bkJ·mol-1,则氢气的燃烧热为
(2)673 K时,在一恒容密闭容器中充入5 mol乙苯(g),反应达到平衡后容器内气体的压强为p1;若再充入amol的乙苯(g),重新达到平衡后容器内气体的压强为2p1,则a
(3)在实际生产中,在恒压条件下常以高温水蒸气作为反应体系的稀释剂(水蒸气不参加反应),此时乙苯的平衡转化率与水蒸气的用量、压强(p)的关系如图所示。
![](https://img.xkw.com/dksih/QBM/2017/12/22/1844048916119552/1845297347878912/STEM/b0a60dcf-8b7b-47ec-856a-d2d7de1dab25.png?resizew=269)
①加入水蒸气稀释剂能提高乙苯转化率的原因是
②在实际生产过程中,当控制反应温度为900 K时生产效率最佳,选用此温度进行生产的原因为
③用平衡分压代替平衡浓度计算,其中,分压=总压×物质的量分数,则900K时的平衡常数Kp=
④改变下列条件,能使乙苯的反应速率和转化率一定增大的是
A.恒容时加入稀释剂水蒸气 B.压强不变下,温度升至1500 K
C.在容积和温度不变下充入Ar D.选用催化效果更好的催化剂
(4)已知苯乙烯可催化氧化生成苯乙醛:
![](https://img.xkw.com/dksih/QBM/2017/12/22/1844048916119552/1845297347878912/STEM/be1b9e54-fec5-4524-b582-82b58819431b.png?resizew=126)
![](https://img.xkw.com/dksih/QBM/2017/12/22/1844048916119552/1845297347878912/STEM/c63b2fc2-7a78-457e-8c62-817be8beb262.png?resizew=101)
【推荐2】先进的甲醇低压羰基合成乙酸工艺的普及推广,导致我国乙酸产能过剩。使用特定催化剂进行乙酸直接加氢制备乙醇的反应原理如下:
主反应:CH3COOH(g)+2H2(g)CH3CH2OH(g)+H2O(g) △H1
副反应:CH3COOH(g)+CH3CH2OH(g)CH3CH2OOCCH3(g)+H2O(g) △H2<0
副反应的反应热绝对值远远小于主反应的反应热绝对值。
(1)一定温度下,将1molCH3COOH(g)、5molH2(g)通入到恒压密闭容器电(不考虑副反应)。达到平衡时,H2的转化率为4%,该反应放热akJ。则该温度下主反应的△H1=
(2)250℃下,恒压密闭容器中充入一定量H2(g)和CH3COOH(g)(不考虑副反应),下列条件不能判断反应达到平衡状态的是
A.混合气体的密度保持不变 |
B.混合气体的总质量保持不变 |
C.H2O的体积分数不变 |
D.n(H2):n(CH3CH2OH)=2:1,且保持不变 |
(3)已知:I.S表示选择性,且主反应产物的选择性往往大于副反应产物的选择性
II.S(乙醇)=×100%
在n(H2):n(CH3COOH)=10时:2MPa下,平衡时S(乙醇)和S(乙酸乙酯)随温度的变化;250℃下,平衡时S(乙醇)和S(乙酸乙酯)随压强的变化均如图所示。
①250℃下,乙醇选择性随压强变化的曲线是
②曲线b是乙醇选择性随温度变化的曲线,曲线b变化的原因是
③150℃,在催化剂作用下和CH3COOH反应一段时间后,乙醇的选择性位于m点,不改变反应时间和温度,一定能提高乙醇选择性的措施
(4)一定温度和恒定压强下,向初始体积为1L容积可变的密闭容器中通入2molH2和1molCH3COOH,同时发生主反应和副反应,测得平衡时n[H2O(g)]=0.8mol,体系中气体物质的堡减小20%,则平衡时,c(H2)=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503e8725adbf356c943404822d0fdbe9.png)
(1)硼在元素周期表中的位置
(2)请完成
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b392c21c6a55cb42b9c1785994e84a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13bad6cb9e5a52d901e7bf25d7638459.png)
(3)在其他条件相同时,反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de89eafc0b7bb7cd89da415f02cc18d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb2c1afbe01812c180366696d069df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601c75a9fcd5b0915c6e66fdf34abf50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1aed66be54c8dd1014964fa0fad1172.png)
![](https://img.xkw.com/dksih/QBM/2021/9/27/2817363162357760/2818551653376000/STEM/e9756785-b99f-4ad9-917e-1cd954d9cd1a.png?resizew=200)
①温度对该反应的反应速率和平衡移动的影响是
②该反应的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2922ae637886073827dff8c97681427.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb2c1afbe01812c180366696d069df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2df94a377a9f0431c10eb6fd82febdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a09e4fe127776cb4969911c6614350f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b7217c39e7642c339fa71418eaed03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54266e9d0691661f0e2c9a2f1973c155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931c57536f146a273341f79334cf2d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940db2e9b806d2c9dbedcf14f05b9480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b0547b553bc0c6d94299341006c14.png)
(5)已知室温下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659105f337cf41cb6411ff0c9ea2c249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f017b07caebe170d234d46fa4dd6b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae950dce6569a48321f5f4126f540a9c.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb2c1afbe01812c180366696d069df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce93086f0133444d40743d654cba1c55.png)