Two important points Half wave potential (E2)is close to Eo for reduction reaction E12≈E0-Eref -0.50=E0-0.24 for SCE E0=-0.26V Limiting current (i)proportional to analyte concentration(really activity) i=k.CA CEM333 page 12.8 Two important points • Half wave potential (E1/2) is close to E0 for reduction reaction E1/2 » E 0 - Eref -0.50 = E 0 - 0.24 E 0 = -0.26 V for SCE • Limiting current (il) proportional to analyte concentration (really, activity) i l = k× cA CEM 333 page 12.8