How is the corrosion of zinc in contact with cadmium in neutral and acidic media (HCl solution)? What metal is a cathode, which anode? To compose electronic equations of anode and cathode processes. What is the composition of corrosion products? φ0(Zn2+/Zn) = – 0,76 B, φ0(Cd2+/Cd) = -0,40 B