Look up the standard reduction potential for the reverse of the oxidation reaction and change the sign. Look up the standard potential for the reduction half-reaction. Write the half-reactions for each process.Ģ. Let’s use these steps to find the standard cell potential for an electrochemical cell with the following cell reaction. For the oxidation half-reaction, #E⁰_text(ox) = "-" E⁰_text(red)#.Īdd the two half-cell potentials to get the overall standard cell potential. Look up the reduction potential for the reverse of the oxidation half-reaction and reverse the sign to obtain the oxidation potential. Look up the reduction potential, #E⁰_"red"#, for the reduction half-reaction in a table of reduction potentials Write the oxidation and reduction half-reactions for the cell. Perfilyev MV, Demin AK, Kuzin BL, Lipilin AS (1988) High-temperature electrolysis of gases.The first step is to determine the cell potential at its standard state - concentrations of 1 mol/L and pressures of 1 atm at 25☌.
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