Mechanisms of Chemical Change F.2 Electron Transfer Reactions (id: 5ec68887c)

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 sho7qd8,zi(tlze )k/ + ak-kf zkz nk9v1gws 8+ yw(n:iivim a Daniel cell. Zinc is more reactive than copper. When the cell is operating, which statement about the ions in the cell is cvm8 ni+i:iyw(orrect?

A. Positive ions in the salt bridge diffuse into the copper half cell
B. Positive ions in the salt bridge diffuse into the zinc half cell
C. $Zn^{2+}(aq)$ ions are deposited at the zinc electrode as Zn(s)
D. he concentration of $Cu^{2+}(aq)$ ions increases in the copper half cell


参考答案:  A


本题详细解析:
The positive ions (cations) move in the direction of the cathode as thycc uub (0gaft0,edf :3a9b s0e positive ustbfu d0,0g c(3af:ecab y90 $Cu^{2+}$ ions are used up. Zn being more reactive than copper, Zn(s) is the anode where oxidation occurs, and Cu(s) is the cathode where reduction of $Cu^{2+}(aq)$ occurs.

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