Oxidation potential of hydrogen electrode is maximum when it is in contact with a solution of
[H+] = 0.1
[H+] = 0.2
[H+] = 0.3
[H+] = 0.4
ERP =-0.0591pH; As pH increases, reduction potential decreases; ERP∝H+ , ERP=-EOP ; Lesser the reduction potential, higher the oxidation potential.