Explain the half-reaction that occurs at the cathode

Reference no: EM13527323

A voltaic cell is constructed from a half-cell in which an aluminum rod dips into a solution of aluminum nitrate, Al(NO3)3, and another half-cell in which a lead rod dips into a solution of lead(II) nitrate, Pb(NO3)2. The two half-cells are connected by a salt bridge. Aluminum metal is oxidized during operation of the voltaic cell. What is the half-reaction that occurs at the cathode?

Pb(s) ? Pb2+(aq) + 2e-

Pb2+(aq) + 2e- ? Pb(s)

Al(s) ? Al3+(aq) + 3e-

Al3+(aq) + 3e- ? Al(s)

Al(s) + 3e- ? Al3-(aq)

Reference no: EM13527323

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