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July 8, 2015

Homework Help: Chemistry

Posted by John on Monday, April 14, 2008 at 6:03pm.

If a copper sample containing some zinc impurity is to be purified by electrolysis, the anode and the cathode must be which of the following?

a. anode: pure copper cathode: pure zinc
b. anode: pure zinc cathode: pure copper
c. anode: pure copper cathode: impure copper
d. anode: impure copper cathode: pure copper
e. anode: impure copper cathode: pure zinc

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