A common shorthand way to represent a voltaic cell is anode| anode solution || cathode solution |cathode A double vertical line represents a salt bridge or a porous barrier. A single vertical line represents a change in phase, such as from solid to solution.

(a) Write the half-reactions and overall cell reaction represented by Fe| Fe²⁺||Ag⁺ | Ag; sketch the cell.

(b) Write the half-reactions and overall cell reaction represented by Zn| Zn²⁺||H⁺ |H₂; sketch the cell.

(c) Using the notation just described, represent a cell based on the following reaction:

ClO₃^-(aq) + 3Cu(s) + 6H⁺(aq) → Cl^-(aq) + 3Cu²⁺ (aq) + 3H₂O(I)

Pt is used as an inert electrode in contact with the ClO₃^- and Cl^-. Sketch the cell.