Sketch a voltaic cell for each redox reaction. Label the anode and cathode and indicate the half-reaction that occurs at each electrode and the species present in each solution. Also, indicate the direction of electron flow.

2 Ag (aq) + Pb (s) → 2 Ag (s) + Pb²⁺ (aq)
2 ClO₂ (aq) + 2 I⁻ (aq) → 2 ClO₂⁻ (aq) + I2 (s)