2019年中考化学真题分类汇编2我们身边的物质综合4气体流程图试题气体成分的鉴别无答案.pdf

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1、1/6 2019 年中考化学真题分类汇编2 我们身边的物质综合4 气体流程图试题气体成分的鉴别无答案18 咸宁 5、有三瓶无色无味的气体 X、Y、Z，它们分别是甲烷、氢气、一氧化碳中的一种，分别点燃三种气体，用干燥的冷烧杯罩在火焰上方，只有X和 Z火焰上方的烧杯内壁有水滴出现，燃烧后分别向烧杯中注入少量澄清的石灰水，振荡，只有Y和 Z的烧杯内石灰水变浑浊。则X、Y、Z分别是 A.H2 CO CH4 B.CH4 CO H2 C.CO CH4 H2 D.CO H2 CH42/6 18 广东8.有一混合气体通过澄清石灰水无明显现象，剩余气体经浓硫酸洗气后点燃，在火焰上方罩上干冷烧杯，内壁出现水雾。符

2、合上述现象的气体组合是A.H2、CO、CO2 B.N2、02、CO2 C.H2、CH4、CO D.H2、CH4、CO218 广元132018省市，13 题，6 分某可燃性气体X可能含有H、C、O三种元素中的一种或几种，为探究其成分，某同学按如下图装置在空气中点燃X(夹持仪器已略去)已知：无水硫酸铜为白色粉末，遇水变蓝，分析推断：(1)假设无水硫酸铜变蓝，澄清石灰水未出现浑浊，则X一定含有的元素是 _，X燃烧的化学方程式为 _ _；(2)假设无水硫酸铜不变色，澄清石灰水出现浑浊，则X一定含有的元素是 _ X 燃烧的化学方程式为 _ _；。(3)假设无水硫酸铜变蓝，澄清石灰水出现浑浊，则X一定含有

3、的元素是 _，且 X _(选填字母编号)A.只能是纯洁物 B.只能是混合物 C.既可能是纯洁物，也可能是混合物【思路解析】此题主要考查物质的推断及检验和鉴别；根据质量守恒定律，化学反应前后元素种类不变，可燃物在空气中充分燃烧生成水，说明该物质中一定含有氢元素，如果可燃物在空气中充分燃文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3

4、R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 H

5、I5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3

6、R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 H

7、I5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3

8、R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 H

9、I5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R33/6 烧，生成二氧化碳，说明该物质中一定含有碳元素；因为无水硫酸铜为白色粉

10、末，遇水变蓝，可利用此性质来检验水的存在，根据二氧化碳，能使澄清石灰水变浑浊，用澄清石灰水来检验二氧化碳气体；【解题过程】如果气体X燃烧产物通过上述装置，(1)假设无水硫酸铜变蓝，澄清石灰水不变浑浊，则说明X燃烧只生成水，则X一定含有的 H元素，X为 H2，燃烧的化学方程式：2H2+O22H2O；故填：H；2H2+O22H2O；(2)假设无水硫酸铜不变色，澄清石灰水出现浑浊，则 X一定含有 C元素，X为 CO，燃烧的化学方程式为：2CO+O22CO2；故填：C；2CO+O22CO2；(3)假设无水硫酸铜变蓝，澄清石灰水出现浑浊，则X一定含有 C、H元素，且 X可能是CH4，或 H2和 CO、或

11、 CH4和 H2、或 CO和 CH4、或 CH4、H2和CO，因此气体 X既可能是纯洁物，也可能是混合物，故选C；故填：C、H；C；点燃 点燃 点燃 点燃【知识点】物质的检验、鉴别，质量守恒定律及其应用。18 重庆 B23.(6 分)某未知气体 X可能含有 CO、CH4中的一种或两种，某同学设计实验进行探究。查阅资料:()加热时,CH4能与 CuO反应生成 Cu、CO2和 H2O；()20时，Ca(OH)2和 Ba(OH)2溶解度分别为：0.165g，2.1g.(1)仅器 M的名称是，CH4与 CuO反应的化学方程式为。(2)气体 X成分的猜想与探究文档编码:CT2L5A6T8M1 HI5J5

12、H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档

13、编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5

14、H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档

15、编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5

16、H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档

17、编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5

18、H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R34/6 猜想 1:只有 CO 猜想 2:只有 CH4 猜想 3:既有 CO又有 CH4实验时，先往装置中通一段时间的N2，再通入气体 X后加热，实验中有以下变化：变化 1:A 中玻璃管内黑色粉未逐渐变红变化 2：B瓶增重变化 3：C中出现浑浊根据变化 (填“1”“2”或“3”),可知猜想 1 不成立根据上述变化仍无法确定气体X的成分，还需要测定 (填序号)，并进行定量分析才能得出结论。a.实验前 A中

19、 Cu0的质量b.B 瓶增重的质量c.C 瓶增重的质量(3)讨论和反思C 中用 Ba(OH)2溶液而不用 Ca(OH)2溶液的原因是。从环保的角度，该装置还应进行的改良是。18 金华28某混合气体由CO、CO2、SO2三种气体组成，某兴趣小组对此进行了相关实验：【查阅资料】SO2能使品红溶液褪色；SO2易与高锰酸钾溶液反应而被吸收，并能使其褪色；SO2能使氢氧化钡溶液和澄清石灰水变浑浊；CO和 CO2均不能使品红溶液褪色，也不与高锰酸钾溶液反应。【实验研究】为验证这三种气体，同学们设计并进行如下实验：文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT

20、2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F

21、1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT

22、2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F

23、1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT

24、2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F

25、1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT

26、2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R35/6【事实与结论】通过实验验证了以上三种气体都存在1装置 A的作用是；2能证明气体中含有CO2的现象是；【反思与评价】3假设装置按CDABE 的顺序连接，则无法验证的气体是；4有同学提出上述原装置中省略D 装置也能到达实验目的，你认为该同学的设计有无道理并说明理由。18 青岛 284 分某气体可能含有氢气、一氧化碳、二氧化碳、水蒸气中的一种或几种。某兴趣小组利用以下图中的实验装置设计实验，探究气体的成分。请用符合题目要求的装置序号填空装置可以重复使

27、用，除杂试剂均足量。提示：CO+CuO Cu+CO2，H2+CuO Cu+H2O；无水硫酸铜粉末遇水变蓝色。1假设检验气体中是否存在水蒸气，可将该气体通入装置。2将气体依次通过装置，可检验并除去该气体中的二氧化碳。3假设检验气体中是否存在一氧化碳，可将该气体依次通过装置。4将气体依次通过装置，可一次性确定该气体的成分18 娄底 2216 分某实验小组的同学在学习了铁的冶炼后，想探究炼铁高炉排放出的高炉气体中含有污染环境的气体有哪些，请我们共同参与探究并答复以下问题：【提出问题】高炉气体中含有污染环境的气体是什么？文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文

28、档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J

29、5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文

30、档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J

31、5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文

32、档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J

33、5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文

34、档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R36/6【作出猜想】猜想一：只有CO；猜想二：只有 SO2；猜想三：CO和 SO2都有；【查阅资料】二氧化硫能使澄清石灰水变浑浊与CO2相似，能使品红溶液褪色，可被酸性高锰酸钾溶液吸收。【实验探究】该实验小组的同学组装了如图1 装置进行实验。1甲同学在实验中发现A 中品红溶液褪色，高炉气体中含有气体，B 中酸性高锰酸钾溶液的作用是，C 中品红溶液的作用是；2乙同学发现C 中品红溶液没有褪色，E 中澄清石灰水变浑浊，得出高 炉气体中 含有CO

35、 丙 同 学认为 乙同学 的结 论不 正确，理由是。3该实验小组的同学经过讨论后，改良了实验装置，如图2 所示。用氢氧化钠溶液代替酸性高锰酸钾溶液的优点是，写出 SO2与NaOH 溶液反应的化学方程式。【实验结论】炼铁厂排放的高炉气体中含有有害气体CO和 SO2，直接排放到空气中会污染环境，需达标后才能排放。文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I

36、4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:

37、CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I

38、4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:

39、CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I

40、4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3文档编码:CT2L5A6T8M1 HI5J5H7I4F1 ZK7Y6A4C3R3