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]
Which statement about electri u 7f:0zpi-ujoplating an ob 1j gm(enp* xk u7ym8sn22i /.i0llgqfg 8kq7eject with silver is incorrect?
A. The object is placed at the negative electrode
B. Electrons travel from the positive electrode to the negative electrode
C. The silver electrode must be pure
D. The anode consists of silver metal
参考答案: C
本题详细解析:
In electroplating, the anode is made of silve )-o5hu +ok s2z1qyu6y21 va(nec1 pwwxhps3mr metal, which is oxidized to $Ag^+$ ions. The $Ag^+$ ions are then reduced at the cathode to Ag metal, resulting in a coating around this object.
Any impurities will sink to the bottom of the vessel.
In electrolytic cells, the anode is positive, and the cathode is negative. As a result, electrons travel from positive to negative.
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