“软电池”采用一张薄层纸片作为传导体,一面为锌,另一面为二氧化锰,纸层中水和氧化锌组成电解液。电池总反应为:Zn+2MnO2+H2O=2MnO(OH)+ZnO。下列说法正确的是

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“软电池”采用一张薄层纸片作为传导体,一面为锌,另一面为二氧化锰,纸层中水和氧化锌组成电解液。电池总反应为:Zn+2MnO₂+H₂O=2MnO(OH)+ZnO。下列说法正确的是（）

A：该电池的正极为氧化锌

B：锌电极附近溶液的pH不变

C：电池正极反应式:2MnO₂+2e^-+2H₂O=2MnO(OH)+2OH^-

D：当0.1molZn完全溶解时,流经电解液的电子的物质的量为0.2mol

上一题下一题 0.0难度选择题更新时间:2018-05-17 05:01:09

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C

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House of Porridge
Welcome to Clark's Porridge House. We have different kinds of porridge. We have meat porridge, vegetable porridge. And fruit porridge is our special, it is only RMB 4 yuan for one bowl. A bowl of meat is RMB 5 yuan. Vegetable porridge is RMB 3 yuan for one bowl, but RMB 5 yuan for two. We have thin pancakes, too. They are RMB 5 yuan for ten. Come and taste the delicious food here. If you are too busy to come, make a telephone call to us and we can send the food to you in 20 minutes.
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