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 shows a Daniel cell. Zb4*o b7i20pm2st fmteinc is more r( o :qbvi oy8nrk(;tz1a6krs2eactive than copper. When theyo: r 1;8b( vtrazn(6qk 2oiks cell is operating, which statement about the ions in the cell is correct?

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 directionw ,5--cglts kvtwk412j w 1oc,kbg)wp of the cathode as the positive cowkgsgw )bv1,lptw ck21kjt4 -,-5w$Cu^{2+}$ 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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