ElectrochemistryHard
Question
When the sample of copper with zinc impurity is to be purified by electolysis, the appropriate electrode are
Options
A.pure zinc as cathode and pure copper as anode
B.impure sample as cathode and pure copper as anode
C.impure zinc as cathode and impure sample as anode
D.pure copper as cathode and impure sample as anode
Solution
Impure Cu will oxidise from anode along with Zn but only Cu2+ will reduce on cathode in purification of Cu2+.
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