I.称取ag研细的石灰石样品于250mL烧杯中,加过量稀盐酸溶解,水浴加热10分钟;
II.稍冷后逐滴加入氨水至溶液pH≈4,再缓慢加入适量(NH4)2C2O4溶液,继续水浴加热30分钟;
III.冷却至室温后过滤出沉淀,用另外配制的稀(NH4)2C2O4溶液洗涤沉淀三次,再用蒸馏水洗涤至洗涤液中无法检出Cl−;
IV.加入适量热的稀硫酸至沉淀中,获得的溶液用cmol·L−1KMnO4标准溶液滴定至终点。
V.平行测定三次,消耗KMnO4溶液的体积平均为VmL。
已知:H2C2O4是弱酸;CaC2O4是难溶于水的白色沉淀。
(1)I中为了加快反应速率而采取的操作有
(2)II中加入氨水调节溶液pH的作用是
(3)III中洗涤得到干净的沉淀。
①结合平衡移动原理,解释用稀(NH4)2C2O4溶液洗涤沉淀的目的
②验证沉淀是否洗涤干净的操作是
③若沉淀中的Cl−未洗涤干净,则最终测量结果
(4)IV中用KMnO4标准溶液滴定。
①滴定时发生反应的离子方程式为
②滴定至终点的现象为
③样品中以CaO质量分数表示的钙含量为
相似题推荐
(1)NH3还原NO的主反应为4NH3(g)+4NO(g)+O2(g)=4N2(g)+6H2O(g)。
已知:N2(g)+O2(g)=2NO(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc2897d7ce4c712efef991c67af2bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0e5b284d67afcb2175bd0821e0d70fc.png)
上述主反应的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d529dd8302544058eb2930a98a7d71.png)
(2)在某钒催化剂中添加一定量Cu2O可加快NO的脱除效率,其可能机理如图所示(*表示物种吸附在催化剂表面,部分物种未画出)。
②烟气中若含有SO2,会生成NH4HSO4堵塞催化剂孔道。生成NH4HSO4的化学方程式为
(3)将模拟烟气(一定比例NOx、NH3、O2和N2)以一定流速通过装有Fe/Zr催化剂的反应管,测得NOx转化率随温度变化的曲线如图所示。
②温度高于450℃时,NOx转化率已降低为负值,其可能原因是
(1)该同学认为:由于预先控制了反应的其他条件,那么,两次实验时反应的速率不一样的原因,只有以下五种可能:
原因I:Cl-对反应具有促进作用,而SO42-对反应没有影响;
原因II:
原因III:Cl-对反应具有促进作用,而SO42-对反应具有阻碍作用;
原因IV:Cl-、SO42-均对反应具有促进作用,但Cl-影响更大;
原因V:
(2)该同学设计并进行了两组实验,即得出了正确的结论。他取了两片等质量、外形和组成相同、表面经过砂纸充分打磨的铝片,分别放入到盛有同体积、c(H+)相同的稀硫酸和稀盐酸的试管(两试管的规格相同)中:
①在盛有稀硫酸的试管中加入少量NaCl或KCl固体,观察反应速率是否变化;
②在盛有稀盐酸的试管中加入少量Na2SO4或K2SO4固体,观察反应速率是否变化。若观察到实验①中
(3)为了使实验“定量化”,使结果更精确,可以对实验进行如下改进:
①配制c(H+)相同的稀盐酸和稀硫酸:现有浓度为1mol·L-1的盐酸和密度为1.225g·cm-3、质量分数为20%的硫酸,若要准确量取该硫酸20.00mL,需要用
配制溶液时还需要用到的玻璃仪器有
②比较反应速率:反应时间可以用秒表测定。如果要对上述实验中的反应速率进行比较,可以通过测定哪些物理量来确定?要求回答一种即可。
【推荐3】甲烷是最简单的烃,可用来作为燃料,也是一种重要的化工原料。
(1)A.CH4(g)+2O2(g)=CO2(g)+2H2O(g) ΔH=-Q1kJ/mol
B.CH4(g)+2O2(g)=CO2(g)+2H2O(l) ΔH=-Q2kJ/mol
C.CH4(g)+2O2(g)=CO2(g)+2H2O(l) ΔH=+Q2kJ/mol
D.CH4(g)+O2(g)=
CO2(g)+H2O(l) ΔH=
Q2kJ/mol
上述热化学方程式中的反应热能正确表示甲烷燃烧热的是
(2)以甲烷为原料通过以下反应可以合成甲醇:2CH4(g)+O2(g)CH3OH(g) ΔH=-251.0kJ/mol
现将2molCH4(g)和1molO2(g)充入密闭容器中,在不同温度和压强下进行上述反应。实验测得平衡时甲醇的物质的量随温度、压强的变化如图所示:
①P1时升高温度,n(CH3OH)
②E、F、N点对应的化学反应速率由大到小的顺序为
③下列能提高CH4平衡转化率的措施是
a.选择高效催化剂b.增大投料比
c.及时分离产物
④若F点,n(CH3OH)=1mol,总压强为2.5MPa,则T0时F点用分压强代替浓度表示的平衡常数Kp=
⑤在温度为T0,压强为P2时,各物质以下列量进行投料反应,达到平衡时,混合气体各组分的百分含量与E点相同的是
A.4molCH4(g)和2molO2(g)
B.2molCH4(g)、1molO2(g)和2molCH3OH(g)
C.1molCH3OH(g)
D.1molCH4(g)、1molO2(g)和1molCH3OH(g)
E.1molCH4(g)、0.5molO2(g)和1molCH3OH(g)
实验一:焦亚硫酸钠的制取
采用如图装置(实验前已除尽装置内的空气)制取Na2S2O5。装置Ⅱ中有Na2S2O5晶体析出,发生的反应为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb0e48f58c40a36d33afa4ad5f0443a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878601647644672/2928458352074752/STEM/068ad6ab-2b6e-4ec0-abd7-6ac0880cdb03.png?resizew=305)
(1)装置Ⅰ中产生气体的化学方程式为
(2)要从装置Ⅱ中获得已析出的晶体,采取的分离方法是
(3)装置Ⅲ中用于处理尾气,可选用的最合理装置(夹持仪器已略去)为
a.
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878601647644672/2928458352074752/STEM/9e847089-f87f-4055-8c10-476a63ce17f7.png?resizew=85)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878601647644672/2928458352074752/STEM/cb3429eb-76be-4792-bd11-3e6ea65add37.png?resizew=108)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878601647644672/2928458352074752/STEM/fbccc331-b550-4704-be70-bb282bc9e5a6.png?resizew=94)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878601647644672/2928458352074752/STEM/87c2f272-2cf3-4631-91bf-8f71056a75bf.png?resizew=101)
实验二:焦亚硫酸钠的性质:Na2S2O5溶于水即生成
(4)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbcf36f9ffe5d7129a0882d827efdf02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4da2b7e78dc98c8d3be24acf0ff0447.png)
a.测定溶液的pH b.加入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb790623fa978863994ec6a8682af81d.png)
d.加入品红溶液 e.用蓝色石蕊试纸检测
(5)检验Na2S2O5晶体在空气中已被氧化的实验方案是
实验三:葡萄酒中抗氧化剂残留量的测定
(6)葡萄酒常用Na2S2O5作抗氧化剂。测定某葡萄酒中抗氧化剂的残留量(以游离的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39208d1c3e640e796d76875beeb9fb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ebf13edf163c755772ee1ea7e68678.png)
(已知滴定时反应的化学方程式为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b2337ad02fcb0c6e84101375975257.png)
①按上述方案实验,消耗标准
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1e6f69e28b8e3f0dbf9b70773a0f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39208d1c3e640e796d76875beeb9fb04.png)
②在上述实验过程中,若有部分HI被空气氧化,则测得结果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6413f9839bba2af4d0869d50583c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888e987cc0db2182e1339da4498b0b18.png)
(1)已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee4ff30fd5c452a8f5d231bea01a793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14cf7abbd44996e86352ce2dd9676de.png)
试剂:稀盐酸、稀
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dabf3433f95b16485024c4eede9f2a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388fdfb236c5196bcfbe821d7712f13f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd46a1a853c372c1fb6c7a88cd947e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c38c6b842b451f57d81f9f8dd320e4c.png)
实验步骤 | 现象 |
①取少量样品,加入除氧蒸馏水 | ②固体完全溶解得无色澄清溶液 |
③取少量溶液溶于盐酸 | ④出现乳黄色浑浊, |
⑤静置, | ⑥ |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad5c9a2beda08c063217a69ef36dbe4.png)
①溶液配制;称取1.270g纯净的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad5c9a2beda08c063217a69ef36dbe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fff14e7d0cba03c5a06319ef8e032e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad5c9a2beda08c063217a69ef36dbe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36df7db759c1132f1fae2f624c063328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4d9129b79ac985bc46c88b092aeb02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e1ad922f711b562375347807f6081f.png)
②滴定:利用发生反应:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e01ea91bf66dc6e62e0f62b800dc03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6413f9839bba2af4d0869d50583c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7756d73159fb84165fa9a80c25690d.png)
I.某化学实验小组用如图所示装置(略去夹持仪器)制备亚硝酸钠。
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/2e74abe0-b4fa-4cbb-b264-5b7df588ba7e.png?resizew=537)
已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23271a357b5b1bc0c88b8994e3f4c2a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a6c15428939414834c004df67176f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8765900eac71688450fcd150f35b15ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c68ba66d2cc7ef63c0192cfb622e467f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c41754d5a6063c49f6ee429dc68065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1c2f838f9f6b08d149a7e8a4364c82.png)
(1)装置A中发生反应的化学方程式为
(2)装置B盛放的液体是
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd75effc5b87244f3ac74a999881c030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76dd8c784de99f267754b5bf63f5c14c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27bd34b38d447163af65055eaa986f4.png)
滴定次数 | 1 | 2 | 3 | 4 |
消耗![]() | 20.90 | 20.02 | 20.00 | 19.98 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27bd34b38d447163af65055eaa986f4.png)
②第一次实验数据出现异常,造成这种异常的原因可能是
a.锥形瓶洗净后未干燥
b.滴定管用蒸馏水洗净后未用标准液润洗
c.滴定终点时俯视读数
d.放标准液的滴定管滴定前有气泡,滴定后气泡消失
③滴定终点的判断依据为
④该产品中亚硝酸钠的质量分数为
Ⅰ.配位-沉淀法制备
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405f3607f3ab028d3c0ac31d3486cda0.png)
![](https://img.xkw.com/dksih/QBM/2021/5/9/2717342340259840/2718077376192512/STEM/2228e7a1a9db40ecbbeade57244f67f7.png?resizew=689)
已知:i.Ag3PO4难溶于水,可溶于硝酸;
ii.Ag3PO4沉淀的生成速率会影响其结构和形貌,从而影响其光催化性能;
iii.银氨溶液中存在:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2919c0505c74390bccaf215c519392d5.png)
(1)配制银氨溶液时的反应现象是
(2)加入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9d0ac0ae73046a968d0dcdb3f16b49.png)
□
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0502dd77752fe30a9256fcb367db2b09.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3f4b28e32ef69b9918b93092236bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c481af7a66b03ed183231a02fe55786e.png)
Ⅱ.Ag3PO4光催化剂的使用和再生
已知:Ag3PO4晶体在光照条件下发挥催化作用时,首先引发反应。a.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d935b4d097f1d6b12020acf513e4a9d1.png)
(4)Ag3PO4光催化CO2制备甲醇可实现“碳中和”,a的后续反应:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c4e54fc8ffbebccef060b4619a6cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1783b031bbc4c5b40dbc50d289ef275.png)
(5)Ag3PO4光催化降解RhB(代表有机污染物),RhB被氧化成CO2和H2O。a的后续反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3721031c3dc1a42c1d8ec745e72c2b.png)
注:Ag3PO4在该催化过程中可能发生光腐蚀,生成单质银,影响其光催化性能。
用Ag3PO4依次降解三份相同的废水,测得3次降解过程中RhB的残留率(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682a628b0577dc361afc4964a56d713b.png)
![](https://img.xkw.com/dksih/QBM/2021/5/9/2717342340259840/2718077376192512/STEM/37b7fa2fb02841b7b7e4a8b348feb300.png?resizew=243)
①下列说法正确的是
a.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11975a6a7fcdf6986ff04978347e667a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5151248c6f50e0e4dd5b27750cd037c9.png)
b.第1次使用后Ag3PO4的光催化性能降低
c.该实验条件下,Ag3PO4使用两次即基本失效
②第1次光降解时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf268b2a035b21bcd750aaa42a5218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab97dc27ea84c169d7e22048a0940da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db2698434b9f5b0aa8e5ca5f61ea5d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83515e7f4cf256acf2f2566d260fdda9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2407f6418bcb11c73f9ecee657b15431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0641a680d3500ca3bcdb5612441b6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0641a680d3500ca3bcdb5612441b6a5.png)
(1)浸取。实验室浸取软锰矿的装置如图所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/96686ff2-e7ed-4e75-b1ce-e6adedea28c2.png?resizew=307)
①为了提高软锰矿的浸出速率和浸取率,上述装置中采取的措施有
②仪器a为
③反应通常在70℃下反应,写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0641a680d3500ca3bcdb5612441b6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9028a8c90efe91bbfac33fb674352b8c.png)
(2)除杂。向已经除去铁、铝、硅元素的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc7d0e5207a89896e0ec7f67602c7c0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ca163746b0c774efde963227ff12d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e18846ec9f4312e7e93b3e60efa6d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa13b2b9b732cea91042f6c823f83b70.png)
(3)沉锰。向
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc7d0e5207a89896e0ec7f67602c7c0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c363de647e8cc8c08a58e452150c4cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda5245df9ace40d18e5cfadcaea9cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda5245df9ace40d18e5cfadcaea9cfb.png)
a、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda5245df9ace40d18e5cfadcaea9cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5533a64f801adeabf53d192906e951.png)
c、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5533a64f801adeabf53d192906e951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98183b7becdd0efb6fe8f57cdcbce983.png)
(4)热解。将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda5245df9ace40d18e5cfadcaea9cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24fff4a777a7c96851e5851030ccc40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0641a680d3500ca3bcdb5612441b6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24fff4a777a7c96851e5851030ccc40.png)
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Ⅰ. 一种以金属锌和选择性催化材料为电极的新型
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efa9ce7ff5577f234ae6a460089e8255.png)
![](https://img.xkw.com/dksih/QBM/2021/3/2/2669360933732352/2670482450309120/STEM/011ed13d67a745fd9dc49ecf8a65363f.png?resizew=274)
(1)放电时,电池正极发生的电极反应为
(2)充电时,电池负极附近溶液的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1066e53bf79a3cdff7ec2934bd09e272.png)
(3)充电时,电池总反应式为
(4)放电时,电路中每转移
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0e1a928167fedd7f9cbc804eade8cb.png)
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Ⅱ. “湿法炼锌”是现代常用的冶锌方法,由锌浸出、酸锌溶液净化、锌电解沉积三大环节组成。电解环节中,电解液中较高浓度的
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(5)除
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(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23b2faf17f098432cf1ea4653d76e22.png)
(7)反应
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30dd749e0ee4c4f38595b2ab4087447.png)
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已知:①NH3不溶于CS2,CS2密度比水大且不溶于水;
②三颈烧瓶内盛放:CS2、水和催化剂;
③CS2+3NH3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c14048e6e3ab1d6292e923b0b5d2a8e.png)
④NH4HS在105℃就会完全分解。
回答下列问题:
(1)装置A中反应的化学方程式是
(2)装置D中橡皮管的作用是
(3)制备硫氰化钾晶体:先滤去三颈烧瓶中的固体催化剂,再减压
(4)测定晶体中KSCN的含量:称取6.0g样品,配成500mL溶液,量取25.00mL溶液于锥形瓶中,加入适量稀硝酸,再加入几滴Fe(NO3)3溶液作指示剂,用0.1000mol/L AgNO3标准溶液滴定,达到滴定终点时消耗AgNO3标准溶液18.00mL。[已知:滴定时发生反应的离子方程式:SCN-+Ag+=AgSCN↓(白色)]
①用AgNO3固体配制500mL 0.1000mol•L-1的AgNO3标准溶液所需的玻璃仪器有烧杯、量筒、玻璃棒、胶头滴管、
②滴定终点溶液颜色的变化
③晶体中KSCN的质量分数为
(1)晒制蓝图时,用K3[Fe(C2O4)3]·3H2O作感光剂,以K3[Fe(CN)6]溶液为显色剂。其光解反应的化学方程式为:2K3[Fe(C2O4)3]
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d95264473d66ac88d50ce38d8a32fc2.png)
(2)某小组为探究三草酸合铁酸钾的热分解产物,按下图所示装置进行实验。
![](https://img.xkw.com/dksih/QBM/2018/6/9/1963557133729792/1963580570910720/STEM/8b74c5d4-ab7d-4844-9f86-b00e6cb745a2.png?resizew=609)
①通入氮气的目的是
②实验中观察到装置B、F中澄清石灰水均变浑浊,装置E中固体变为红色,由此判断热分解产物中一定含有
③为防止倒吸,停止实验时应进行的操作是
④样品完全分解后,装置A中的残留物含有FeO和Fe2O3,检验Fe2O3存在的方法是:
(3)测定三草酸合铁酸钾中铁的含量。
①称量m g样品于锥形瓶中,溶解后加稀H2SO4酸化,用c mol·L-1 KMnO4溶液滴定至终点。滴定终点的现象是
②向上述溶液中加入过量锌粉至反应完全后,过滤、洗涤,将滤液及洗涤液全部收集到锥形瓶中。加稀H2SO4酸化,用c mol·L-1 KMnO4溶液滴定至终点,消耗KMnO4溶液V mL。该晶体中铁的质量分数的表达式为
![](https://img.xkw.com/dksih/QBM/2016/7/11/1576435307692032/1576435308052480/STEM/9d9b810a8c8144f0bcbf1bbce70ae369.png?resizew=554)
回答下列问题:
(1)在下列装置中,第一次浸出必须用
![](https://img.xkw.com/dksih/QBM/2016/7/11/1576435307692032/1576435308052480/STEM/caff7010f7c64924a525edf4f53f51ee.png?resizew=344)
(2)第二次浸出时,向盛有滤液1的反应器中加入稀硫酸,后滴入过氧化氢溶液。若顺序相反,会造成
(3)浓缩硫酸锌、硫酸铜溶液使用的器皿名称是
(4)某同学在实验完成之后,得到1.5gCuSO4﹒5H2O,则铜的回收率为