Reduction
[tex]Ag^{+1}[/tex] + 1e- → Ag
Oxidation
Pb → [tex]Pb^{+2}[/tex] + 2e-
[tex]Ag^{+1}[/tex] + Pb → Ag + [tex]Pb^{+2}[/tex]
Cathodic protection is a method of controlling corrosion on a metal surface by converting it into the cathode of an electrochemical cell. A straightforward method of protection involves connecting protected metal to a more easily corroded "sacrificial anode" to serve as the anode. The sacrificial metal, rather than the protected metal, corrodes. Galvanized steel is a common application of cathodic protection, in which a sacrificial zinc coating on steel parts protects them from rust.
Oxidation is used in a wide range of industries, including the manufacture of cleaning products and the oxidation of ammonia to produce nitric acid.
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