I.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633c21ba75c40d19fd8461cc0106665.png)
II.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26a13c8d0935a40eea66dc1e84a5c20.png)
回答下列问题:
(1)在恒温恒容密闭容器中充入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c7396b32291a02887607647dde8d441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4609a2c8870c0b88c751407203072fa8.png)
A.平衡后,增大压强,反应Ⅰ的平衡常数减小 |
B.平衡后,升高温度,两个反应都向左移动 |
C.平衡后,充入惰性气体,![]() |
D.其他条件不变,增大![]() |
(2)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff19349a80467d65564cc2953f0c978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6287dab91a4428da92c3ce8f5550973.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/d2922ae637886073827dff8c97681427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c25fec8d4dbaa1521e2563586052cb.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a122e25cf4eb9f03ffe5ec823bfc31.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/7390a2ae-4f0f-4a47-a857-5fc76f7f7e57.png?resizew=302)
已知:i.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd9b54a1cf95a2d2c5a98828582cc4d.png)
ii.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c67ed0f1ba0b8519cf760b136a5143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf695542b077bf20c5bc82d1810c4c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e9053df527d890b483a317566fbb66.png)
①启动该反应需要加热,其主要作用是
A.降低活化能 B.改变反应历程
C.增大反应物能量 D.增大产物能量
②图中代表加入催化剂的曲线是
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4dec8f16f930f00140de3aacc4f97ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
相似题推荐
【推荐1】(1)3.2g硫完全燃烧生成稳定的氧化物放出297.2kJ,写出硫燃烧热的热化学方程式:
(2)氮的固定一直是科学家研究的重要课题,合成氨则是人工固氮比较成熟的技术,其原理为N2(g)+3H2(g)2NH3(g)△H;已知每破坏1mol有关化学键需要的能量如下表:
H-H | N-H | N-N | N |
435.9kJ | 390.8kJ | 192.8kJ | 945.8kJ |
则△H=
(3)在某一容积为2L的恒容密闭容器中,A、B、C、D四种气体物质发生可逆反应,其物质的量n(mol)随时间t(min)的变化曲线如图所示。回答下列问题:
①该反应的化学方程式为
②在2min时,图像发生改变的原因可能是
A.增大B的物质的量B.降低温度
C.加入催化剂D.减小A的物质的量
③不同条件下的该反应的速率:①v(A)=1.0mol·L-1·s-1,②v(B)=1.0 mol·L-1·s-1,③v(C)=1.2 mol·L-1·s-1,④v(D)=1.2mol·L-1·s-1。其中反应速率最快的是
(1)在一定条件下,氢气在氯气中燃烧的热化学方程式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11721f8475c1aee890932c278d247cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7baf499e5d1fdc618a3fbfd93bcd83ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f483eb8188afd27aa8f59e3f0b0ce3e.png)
(2)常温常压下,1 mol乙醇完全燃烧生成
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
(3)根据盖斯定律计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b5ff0df018ead058c44459d3b56917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216c0b5f75355682b56362372e2d6be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fea6d04844305f6f3be84d74b4bab5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f483eb8188afd27aa8f59e3f0b0ce3e.png)
P(红磷,s)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219560b91e62da2da3d1552220a81feb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc501d2f0d9922dffc1184d2fb3746da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f483eb8188afd27aa8f59e3f0b0ce3e.png)
则白磷转化为红磷的热化学方程式为
(4)已知破坏1 mol
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb48d11d16ae254abe4687a92dd9de1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f443c9371e5b213f1709f107174c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1fdec7041bcb3e7cfcf5dec8a0f387.png)
(5)已知①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5297f0bc9e8eeb40999065503f8292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb5d519f981a09188dc18a765e8c43.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450f456fc1cbcf9d7f72a93d8d0fafd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3396e9e066adc1d6e03779938058a9.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4cfa06c0f2c3c0a63a3425655e1136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14aa494345f61c5c935c3113dd990b8a.png)
利用上述三个反应,计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5059fe2e04e6e774063393a04651fc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4bb5ab7f13c24e73afc40e9e4ab04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb5d519f981a09188dc18a765e8c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3396e9e066adc1d6e03779938058a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14aa494345f61c5c935c3113dd990b8a.png)
(6)在微生物作用的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ec42431044eb85982aefc8f0ec7175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c41754d5a6063c49f6ee429dc68065.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/122c5758-0e05-4760-bb0c-8d9fdc7e7482.png?resizew=444)
①第一步反应是
②1 mol
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aba7ad3064c457fe656f24fcc8780b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd07809296c9bb1d5b5a53155b122411.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/5a8f17e8-0a70-44ee-b811-a65b2a54f80e.png?resizew=479)
回答下列问题:
(1)25℃、101kPa 时,5.9gNi 与足量 O2反应生成 NiO 放出 47.2kJ 的热量,则在“空气反应器” 中发生反应的热化学方程式为
(2)“燃料反应器”中发生的部分反应有:
(I)CO(g)+NiO(s)=CO2(g)+Ni(s) ΔH1=-47.0kJ/mol 平衡常数 K1
(II)CH4(g)+4NiO(s)=CO2(g)+2H2O(g)+4Ni(s) ΔH2=+137.7kJ/mol 平衡常数 K2
(III) CH4(g)+3CO2(g)=4CO(g)+2H2O(g) ΔH3=akJ/mol 平衡常数 K3
①CO2的电子式:
②K1、K2、K3之间的关系是:
③在
(3)“水汽转换反应器”中发生的反应为CO(g)+ H2O(g)=CO2(g)+H2(g),将天然气看作是纯净的CH4(假定向水汽转换反应器中补充的水的物质的量等于甲烷的物质的量),若在 t℃时进行转换,水汽转换反应器中达平衡时 CO、H2O、H2、CO2浓度之比为1:x:3:1,则该反应的平衡常数 K=
(4)甲烷制氢传统工艺有水蒸气重整部分氧化重整以及联合重整等,CLR(a)工艺重整是一种联合重整,涉及反应的热化学方程式如下:
CH4(g)+2H2O(g)=CO2(g)+4H2(g) ΔH=+192kJ/mol
CH4(g)+O2(g)=CO2(g)+2H2(g) ΔH=-768kJ/mol
水蒸气重整反应: 部分氧化重整反应:
①采用水蒸气重整的优点是:
②上述两个反应的缺点之一是在制取氢气的同时产生大量温室气体 CO2,若用 NaOH 溶液来吸收 CO2,写出反应的离子方程式:
③若上述两个反应在保持自热条件下(假设无热量损失),理论上 2 molCH4至多可获得 H2的物质的量为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4298cb837170c021b9f2cd4e674a6a3.png)
主反应Ⅰ:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9af41813f6d3aa226dd63a53a11a7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f235e8fc9cfab1cf0da417c51d0b7ce.png)
副反应Ⅱ:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d979f2b91ea403c50df259bcdc1d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259ddc075733a33f765aae6d5b131e2.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4dd103b7d3818567f1b25a03f553197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc36e17ae25f5b5c3abdbedce82ee0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
A.低温、低压 B.低温、高压 C.高温、高压 D.高温、低压
(2)若在恒容绝热的容器中只发生副反应Ⅱ,下列能说明该反应一定达到平衡状态的是___________。
A.容器内气体密度不再改变 |
B.容器内的压强不再改变 |
C.容器内![]() |
D.单位时间内,断开H-H键的数目和断开H-O键的数目之比为1∶2 |
![](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/7644a7769a5fa1bdab46cc0b2dee2861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://img.xkw.com/dksih/QBM/2024/2/3/3425254157115392/3433786394460160/STEM/00a2355ea3934967943cbbf53679a2ad.png?resizew=210)
①a点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e242db798aaff70342c9ec88af31eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48bf604902bd8d68bbcfbd2a7889182.png)
②c点的转化率比b点低的原因是
③温度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea29a5cd9a03f80fecdc6ca39fb14913.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/f92ab0dbc4048258b775759f15585c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8af16ac9fda7c7445b993aff65b691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6115766fdc93e803b2e4ef6612bb238e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0168c0b10d9d09d7e7651c79b2cd16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67cfcf91d55e4644da44b24f16401cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a81595b730492585dcd48bd44023ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67cfcf91d55e4644da44b24f16401cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea29a5cd9a03f80fecdc6ca39fb14913.png)
(4)500℃时,向IL恒容密闭容器中充入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0b61766faee4e922b9f9dcf6a9a918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9deb5d288c0de2009f24463c5f04bedf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bf1e7d221ec4209d7022aaa08fe57a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f846c0e7e5286079b0e8e07cabcc70e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45609efc0f7d44fdbd60aface9006412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5547f6339f968a7af10c5c0c781308a9.png)
(1)已知:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292a18f034d91a95233f2a0ae9556ed.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6209ab37f9249846a5db8ea61e42e78.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1bc8a8a91d412a0f502dec5083207d6.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d51732ac2f5ee64fada8f3e5b29196e.png)
(2)SCR(选择性催化还原)脱硝法是工业上消除氮氧化物的常用方法,反应原理为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea5abe5a4427bd1754b9a870e2d2d2f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/8/9d723c61-ea0b-4ef2-9d5b-eb20af01cba8.png?resizew=256)
①工业上选择催化剂
②在催化剂甲作用下,图中M点NO的转化率
(3)近年来,地下水中的氮污染已成为一个世界性的环境问题。在金属Pt、Cu和铱(Ir)的催化作用下,密闭容器中的H2可高效转化酸性溶液中的NO
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da75639d9df997d684f1d6d99692cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/8/b6ea16af-e3b3-45f4-8bd3-88b315aac9fa.png?resizew=387)
①导电基体Pt颗粒
![](https://img.xkw.com/dksih/QBM/2023/9/10/3321692486041600/3322464465518592/STEM/2d9d5d52ae744b4f9314d18b7cc295c8.png?resizew=17)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da75639d9df997d684f1d6d99692cd.png)
②在单原子铜、铂催化作用下,H2转化NO
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da75639d9df997d684f1d6d99692cd.png)
①2Li(s)+H2(g)═2LiH(s)△H=﹣182kJ•mol﹣1;
②2H2(g)+O2(g)═2H2O(1)△H═﹣572kJ•mol﹣1;
③4Li(s)+O2(g)═2Li2O(s)△H═﹣1196kJ•mol﹣1。
(1)写出LiH在O2中燃烧的热化学方程式
Ⅱ.中和热是指酸跟碱发生中和反应生成1mol H2O所放出的热量.某学生想通过测定反应过程中所放出的热量来计算中和热.他将50mL 0.5mol/L的盐酸与50mL 0.55mol/L的NaOH溶液在如图所示的装置中进行中和反应.请回答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/b2e2aad4-e2e6-4fde-ba20-01bb5f155dc0.png?resizew=183)
(2)从实验装置上看,图中尚缺少的一种玻璃用品是
(3)大烧杯上如不盖硬纸板,则求得的中和热数值
(4)实验中改用60mL 0.50mol/L的盐酸跟50mL 0.55mol/L的NaOH溶液进行反应,与上述实验相比,所求中和热的数值会
(5)设50mL 0.5mol/L的盐酸与50mL 0.55mol/L的NaOH溶液反应的反应热为△H1,25mL 0.5mol/L的浓硫酸与50mL 0.55mol/L的NaOH溶液反应的反应热为△H2,50mL 0.5mol/L的醋酸与50mL 0.55mol/L的NaOH溶液反应的反应热为△H3,则△H1、△H2、△H3的关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763090034394c7085ac40e863bdaf5c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7878894754c4c42fa8983991fa99acff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a653f96c2ab488f273b463a9a5020af.png)
(I)由天然气催化制备二甲醚:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d70bf9c4f5fc1c6e4c8b602eda2759c.png)
(II)由合成气制备二甲醚:
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d0458fe80a80a82f8ec64332c385f6.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc140fe0c6e17943ded1c894f8a426b.png)
回答下列问题:
(1)若甲烷和二甲醚的燃烧热分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c9fb8b45b6e866735cd0f14cc72e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e6e6834b10e1b0a07e058cd68e81bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa36ac9e05b32005ce31f5fbdbba1453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3376ddc858ad460f6093738d0238a56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b2a6bc4b5ef80a57a78c144749392c.png)
(2)反应③的化学平衡常数表达式为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b51ee6fe038c30ffb16019af67a9fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532e5d3ccac0d7df3e0e5d0f607fda3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff19349a80467d65564cc2953f0c978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.混合气体的密度不变
B.反应容器中二甲醚的百分含量不变
C.反应物的反应速率与生成物的反应速率之比等于化学计量数之比
D.混合气体的压强不变
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/2df3554f-15bb-45cb-b0ea-93b1b12bcf80.png?resizew=270)
(3)有人模拟制备原理Ⅱ,在500K时的2L的密闭容器中充入2molCO和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9d5619e4f45483a551d3a8d347cfaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d0ab0ac4c13ac2206d9e6baec6e1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445de53586cd7b2fe8836c385b3d3e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ea124ca0a84f958499bf6157ef2f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326276f15395fb6697f1502b9a1ae5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(4)在500K时的2L的密闭容器中充入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d0cb61a6f1598cd2764aaf41ca1be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8bf1c9a7176e135eb8f57e8f97c8cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77efb01eeb9192b2be06918649c6c1a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3438b7d8a5956d3a017d308b3b41e032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb955b65b0b8c40169b60565cb8dcb71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65229c6b8af46b8c0dc8a444f474dbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cec4917700e7fdf302924b6c8fe962b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed9884d17ccb86ffd0ecd1c9b2d48df.png)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53323c282eb8d3888182a8979a2865e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce93086f0133444d40743d654cba1c55.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cec4917700e7fdf302924b6c8fe962b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48ff34b004919dcded1b0bd089c4bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75336b0ae06059cdabeb1e2d02d6f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b370c59c9dc3d7695ca3c79bd63b9b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0dba29993ac790f70d4514187e560c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88f0911d7f35f8e8cebd27391796b15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e4f45521753e743522b992d42d3ffd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/76e89904-d9c7-4192-8847-ad16070fb00d.png?resizew=258)
①由图可知,溶液酸性增强,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cec4917700e7fdf302924b6c8fe962b.png)
②升高温度,溶液中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cec4917700e7fdf302924b6c8fe962b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e1324e1e9318481b6e7264c8595804.png)
(3)+6价铬的化合物毒性较大,常用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cfe4515a3bd1ca27591a45dba550dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65229c6b8af46b8c0dc8a444f474dbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3438b7d8a5956d3a017d308b3b41e032.png)
(1)平衡时,消耗CH3OH的物质的量为:
(2)该条件下反应达到平衡状态的依据是(填字母)
A.v正(CH3OH)=v逆(CO2)B.混合气体的密度不变
C.c(CH3OH)=c(H2O)D.混合气体的总物质的量不变
(3)升高温度该反应的平衡向
(1)SiHCl3在常温常压下为易挥发的无色透明液体,遇潮气时发烟生成(HSiO)2O等,写出该反应的化学方程式
(2)SiHCl3在催化剂作用下发生反应:
2SiHCl3(g)=SiH2Cl2(g)+ SiCl4(g) ΔH1= +48 kJ·mol−1
3SiH2Cl2(g)=SiH4(g)+2SiHCl3 (g) ΔH2= −30 kJ·mol−1
则反应4SiHCl3(g)=SiH4(g)+ 3SiCl4(g)的ΔH=
(3)对于反应2SiHCl3(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98feedde5546db26eb490641ba3a817.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/00199a0d-a126-4ee5-90e8-7baeadcfe8f7.png?resizew=358)
①343 K时反应的平衡转化率α=
②在343 K下,要提高SiHCl3转化率,可采取的措施是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
![](https://img.xkw.com/dksih/QBM/2021/2/22/2663418109050880/2664100987174912/STEM/7183fc8e5c104a40a9da46e4d498ae6d.png?resizew=396)
回答下列问题:
(1)反应的△H
(2)100℃时达到平衡后,改变反应温度为T,c(N2O4)以0.0020mol·L-1·s-1的平均速率降低,经10s又达到平衡。
a:T
b:列式计算温度T时反应的平衡常数K2=
(3)温度T时反应达平衡后,将反应容器的容积减少一半,平衡向(填“正反应”或“逆反应”)
(4)D为含有足量AgCl固体的饱和溶液,AgCl在水中存在沉淀溶解平衡:AgCl(s)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
(1)已知每破坏l mol有关化学键需要的能量如下表:
H-H | N-H | N-N | N≡N |
436 kJ | 391kJ | 193kJ | 946kJ |
则△H=
(2)在不同温度、压强和相同催化剂条件下,初始时N2、H2分别为0.1mol、0.3mol时,平衡后混合物中氨的体积分数(p)如图所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/0ca03e51-87bd-4d7d-8b15-80289dc3c813.png?resizew=205)
①其中,p1、p2和p3由大到小的顺序是
②若分别用vA(N2)和vB(N2)表示从反应开始至达平衡状态A、B时的化学反应速率,则vA(N2)
③若在250℃、pl条件下,反应达到平衡时容器的体积为1 L,则该条件下合成氨的平衡常数K=
(3)合成氨反应在催化剂作用下的反应历程为(*表示吸附态):
第一步N2(g) →2N*;H2(g)一2H* (慢反应)
第二步N*+H*= NH*;NH*+H*= NH2*;NH2*+H*= NH3* (快反应)
第三步NH3*= NH3(g) (快反应)
比较第一步反应的活化能E1与第二步反应的活化能E2的大小:E1
(4) H2NCOONH4是工业由氨气合成尿素的中间产物。在一定温度下、体积不变的密闭容器中发生反应:H2NCOONH4(s)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
①混合气体的压强不变
②混合气体的密度不变
③混合气体的总物质的量不变
④混合气体的平均相对分子质量不变
⑤NH3的体积分数不变