单选题 适中0.65 引用1 组卷106
某细菌电池的工作原理如图所示,下列说法正确的是
![](https://img.xkw.com/dksih/QBM/2021/6/24/2750033840029696/2750817877499904/STEM/f759f5c4d19a48b2939aaa117a0ead50.png?resizew=445)
![](https://img.xkw.com/dksih/QBM/2021/6/24/2750033840029696/2750817877499904/STEM/f759f5c4d19a48b2939aaa117a0ead50.png?resizew=445)
A.微生物所在电极区放电时发生氧化反应 |
B.每转移1mole—,消耗5.6LO2 |
C.电流由a极沿导线流向b极 |
D.负极反应式为HS—+4H2O+8e—= |
20-21高一下·吉林延边·阶段练习
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科研人员设想用右图所示装置生产硫酸,下列说法正确的是
![](https://img.xkw.com/dksih/QBM/2016/3/3/1576285207494656/1576285207642112/STEM/a62e72bda631445fa8ffc78c746f65fa.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1576285207494656/1576285207642112/STEM/a62e72bda631445fa8ffc78c746f65fa.png)
A.a为正极,b为负极 |
B.负极反应式为2H2O+SO2-2e-=SO42-+4H+ |
C.电子从b极向a极移动 |
D.生产过程中H+由b电极区通过质子膜向a电极区运动 |
纽扣式银锌电池的构造如图所示,电池的总反应为:Zn+Ag2O+H2O=Zn(OH)2+2Ag。下列说法不正确的是
![](https://img.xkw.com/dksih/QBM/2016/5/31/1576419217596416/1576419217940480/STEM/673c235f23b44607af6dd2025102ddb0.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1576419217596416/1576419217940480/STEM/673c235f23b44607af6dd2025102ddb0.png)
A.Zn作负极 | B.电子经外电路流向Ag2O极 |
C.K+向Zn极移动 | D.正极反应:Ag2O+2H2O+2e-=2Ag+2OH- |
某固体酸燃料电池以CaHSO4固体为电解质传递H+,其基本结构见图,电池总反应可表示为: 2H2+O2=2H2O,下列有关说法错误 的是
![](https://img.xkw.com/dksih/QBM/2018/10/22/2059202788442112/2064053498658816/STEM/d4dd8f7ed3a34f9d9826b21b4bdadd2f.png?resizew=230)
![](https://img.xkw.com/dksih/QBM/2018/10/22/2059202788442112/2064053498658816/STEM/d4dd8f7ed3a34f9d9826b21b4bdadd2f.png?resizew=230)
A.电子通过外电路从a极流向b极 |
B.b极上的电极反应式为:O2+4H++4e-=2H2O |
C.H+由b极通过固体酸电解质传递到a极 |
D.每转移0.1 mol电子,标准状况下需消耗1.12 L的H2 |
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