单选题 适中0.65 引用1 组卷133
从海带中提取碘单质,成熟的工艺流程如下,下列关于海带制碘的说法,不正确的是
![](https://img.xkw.com/dksih/QBM/2016/1/12/1576251252539392/1576251252875264/STEM/18e90caacdb143f49f2b48096e2c3df8.png)
![](https://img.xkw.com/dksih/QBM/2016/1/12/1576251252539392/1576251252875264/STEM/18e90caacdb143f49f2b48096e2c3df8.png)
A.实验室在坩埚中灼烧干海带,使有机碘转化为无机碘(I-)并富集 |
B.含I-的滤液中加入稀硫酸和双氧水后,碘元素发生氧化反应 |
C.在碘水中加入几滴淀粉溶液,溶液变蓝色 |
D.碘水中加入CCl4得到I2的CCl4溶液,该操作为“分液” |
16-17高三上·北京·期中
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从海带中提取碘单质,成熟的工艺流程如下:干海带
海带灰
悬浊液
滤液
碘水
I2的CCl4溶液
I2下列关于海水制碘的说法正确的是
![](https://img.xkw.com/dksih/QBM/2016/7/22/1576441167855616/1576441168175104/STEM/61831f73605445308b638c3600d1eb70.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1576441167855616/1576441168175104/STEM/3d83f8f5f2a44eec969e88b2525f7c24.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1576441167855616/1576441168175104/STEM/521e78002116498fadbb8e103904acad.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1576441167855616/1576441168175104/STEM/5e30e77c7c1d4c619d4678a2b573c035.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1576441167855616/1576441168175104/STEM/22fc15c229624403a18417e10aed6286.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1576441167855616/1576441168175104/STEM/ee3eaa03da2a4841bb7131a487c2a38b.png)
A.实验室在蒸发皿中灼烧干海带,并且用玻璃棒搅拌 |
B.含I-的滤液中加入稀硫酸和双氧水后,碘元素发生还原反应 |
C.在碘水中加入几滴淀粉溶液,溶液出现蓝色沉淀 |
D.碘水加入CCl4得到I2的CCl4溶液,该操作为萃取 |
从海带中提取碘单质,成熟的工艺流程如下:
干海带
海带灰![](https://img.xkw.com/dksih/QBM/2018/12/17/2098838404775936/2099591864492032/STEM/721c5c96ac6a48f98e1b0a2d78dca4db.png?resizew=30)
滤液
碘水
I2的CCl4溶液
I2
下列关于海带制碘的说法正确的是( )
干海带
![](https://img.xkw.com/dksih/QBM/2018/12/17/2098838404775936/2099591864492032/STEM/05ca5c69045b44f581d9326eba8452ae.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2018/12/17/2098838404775936/2099591864492032/STEM/721c5c96ac6a48f98e1b0a2d78dca4db.png?resizew=30)
![](https://img.xkw.com/dksih/QBM/2018/12/17/2098838404775936/2099591864492032/STEM/6bb5ec4e5af24573995f478b241c66ea.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2018/12/17/2098838404775936/2099591864492032/STEM/e2e1a950464842ee855f35b4f5b21208.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2018/12/17/2098838404775936/2099591864492032/STEM/077adc240b0f4aebbaf59b8a3363310c.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2018/12/17/2098838404775936/2099591864492032/STEM/e895761231424e56b6d88396897542af.png?resizew=35)
下列关于海带制碘的说法正确的是( )
A.实验室可在蒸发皿中灼烧干海带,并用玻璃棒不断搅拌 |
B.向含I-的滤液中加入稀硫酸和双氧水后,碘元素发生还原反应 |
C.在碘水中加入几滴淀粉溶液,溶液变蓝色 |
D.向碘水中加入CCl4得到I2的CCl4溶液,该操作为萃取,可用乙醇代替CCl4 |
从海带中提取碘单质,成熟的工艺流程如下,下列关于海水制碘的说法中,不正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/df746020-20dd-4aaf-8005-2be5199f150f.png?resizew=458)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/df746020-20dd-4aaf-8005-2be5199f150f.png?resizew=458)
A.实验室适合用坩埚作容器灼烧干海带,并且用玻璃棒搅拌 |
B.在含I-的滤液中加入稀硫酸和双氧水后,碘离子发生氧化反应 |
C.双氧水在此实验中作还原剂 |
D.在碘水中加入CCl4得到I2的CCl4溶液,该操作为“萃取” |
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