如图是电解水制高纯氢的示意图,通过控制开关连接K1或K2,可交替得到H2和O2。下列说法正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/25/0f79897f-f97a-40c6-b70c-d78c9f5e5b93.png?resizew=178)
A.制H2时,连接K2 |
B.连接K1时,电极Ⅰ附近碱性减弱 |
C.制O2时,电极Ⅲ的反应为:NiOOH+e−+H2O=Ni(OH)2+OH- |
D.通过控制开关连接K1和K2,可使电极Ⅲ循环使用 |
更新时间:2019-10-29 15:14:25
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【推荐1】某科学家发现了一种高效、清洁、选择性地将乙烯转化为环氧乙烷(
)的电解装置,如图所示。
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695416100503552/2695941961809920/STEM/d4c2ca1acc0144f9aa85f76dd79ac62f.png?resizew=206)
已知:![](https://img.xkw.com/dksih/QBM/2021/4/8/2695416100503552/2695941961809920/STEM/abfb90b1d9f64e5a8472a7ef6002a8ef.png?resizew=63)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb7f05429f63ece1d7b77f0fffdb53e.png)
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695416100503552/2695941961809920/STEM/a0d63ec132b94595903ae1a02bf9dea4.png?resizew=42)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1dae3b060211b2a2672137d2219864.png)
下列说法正确的是
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695416100503552/2695941961809920/STEM/11520557d7144143a2c4ff1fdc7a9411.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695416100503552/2695941961809920/STEM/d4c2ca1acc0144f9aa85f76dd79ac62f.png?resizew=206)
已知:
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695416100503552/2695941961809920/STEM/abfb90b1d9f64e5a8472a7ef6002a8ef.png?resizew=63)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb7f05429f63ece1d7b77f0fffdb53e.png)
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695416100503552/2695941961809920/STEM/a0d63ec132b94595903ae1a02bf9dea4.png?resizew=42)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1dae3b060211b2a2672137d2219864.png)
下列说法正确的是
A.物质Z是![]() |
B.工作时,X极附近溶液的pH增大 |
C.Y极为阴极,离子交换膜应为阴离子交换膜 |
D.制备的总反应式为![]() ![]() ![]() ![]() |
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