Question

A voltaic cell is constructed from a standard Pb2 | Pb half-cell.
A) True
B) False

Answer 1

True, a voltaic cell is constructed from a standard Pb2 | Pb half-cell.

Step-by-step explanation:

A voltaic cell is constructed from two half-cells, each containing an electrode and an electrolyte solution. In this case, the half-cell mentioned is the standard Pb2 | Pb half-cell. The anode in this half-cell is the Pb(s) electrode, while the cathode is the PbO2(s) electrode. The half-cell reactions are as follows:

At the anode (oxidation): Pb(s) + HSO4¯(aq) → Pb2+(aq) + H2O(l) + 2e-

At the cathode (reduction): PbO2(s) + HSO4¯(aq) + 3H+(aq) + 2e- → PbSO4(s) + 2H2O(l)

So, the statement 'A voltaic cell is constructed from a standard Pb2 | Pb half-cell' is true.