Mechanisms of Chemical Change F.2 Electron Transfer Reactions (id: ec297c734)

本题目来源于试卷: Mechanisms of Chemical Change F.2 Electron Transfer Reactions，类别为 IB化学

[单选题]
The diagram below shows a Daniel cell. Zinc is .g2(2ld usenh g ew qpqv/21rtc/-s:omore reactive than corbzrhd jxnujwo-d1- x94) aslrl )a( d)-y;.dpper. When the spontaneous reaction occurs, which statement about the Daniel cell is cydd9dx -jhw)1a-lxrj br ; 4. l(uona)r-sz d)orrect?

A. The mass of the copper electrode will decrease
B. Electrons flow from the copper electrode to the zinc electrode when the cell is operating
C. The blue colour of the copper (II) sulfate solution will fade over time
D. The zinc electrode is the cathode in this cell


参考答案:  C


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