116. Solving a chemistry problem

342. Consider the cathodic and anode processes in the electrolysis of aqueous solutions of substances. Justify the processes on the electrodes by the values of the potentials (Tables P.6,7,8). Make electrolysis circuits with inert electrodes of aqueous solutions of the proposed compounds (two solutions separately) with inert electrodes or a soluble anode. Calculate the mass or volume (under normal conditions for gases) of the products released on the electrodes when a current of 1 A is passed through the solution for 1 hour.
K3PO4; Pb(NO3)2