如图所示是Zn和Cu形成的原电池，某实验兴趣小组做完实验后，在读书卡上的记录如下，则卡片上的描述合理的是2011.3.18, 实验后的记录：①Cu为负极，Zn为正极②Cu极上有气泡产生，发生还原反应③_刷题宝

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如图所示是Zn和Cu形成的原电池，某实验兴趣小组做完实验后，在读书卡上的记录如下，则卡片上的描述合理的是

2011.3.18, 实验后的记录：
①Cu为负极，Zn为正极
②Cu极上有气泡产生，发生还原反应
③

向Cu极移动
④若有0.5mol电子流经导线，则可产生0.25mol气体
⑤电子的流向是：Cu―→Zn
⑥正极反应式：Cu＋2e^－===Cu²^＋，发生氧化反应

　

A：①②③

B：②④

C：②④⑥

D：③④⑤

上一题下一题 0.0难度选择题更新时间:2018-04-30 01:37:38

答案(点此获取答案解析）

B

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