CH-1744

Electroplating

Chemistry · Secondary 4 · Easy · Electroplating

A student electrolyses aqueous silver nitrate using a silver rod as the anode and a spoon as the cathode. Which half-equation correctly shows what happens at the silver anode?

$Ag^+ + e^- → Ag$
$Ag → Ag^+ + e^-$
$Ag → Ag^{2+} + 2e^-$
$Ag^+ → Ag + e^-$

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