Consider an electrochemical cell constructed from the following half cells, linked by a KCl salt bridge. • an Al(s) electrode in 0.5 M Al₂(SO₄) ₃ solution
• a Pb(s) electrode in 1.0 M Pb(NO₃) ₂ solution
Which electrode is the anode?

Question

Quizplus · Accepted Answer

According to the standard reduction potentials table, Al has a higher reduction potential (-1.66 V) compared to Pb (-0.13 V). Therefore, Al will be the anode and undergo oxidation reaction to form Al3+ ions, while Pb will be the cathode and undergo reduction reaction to form Pb2+ ions.

Consider an Electrochemical Cell Constructed from the Following Half Cells