Based on the intercept associated with the best fit line, calculate the standard reduction potential for the Fe2+/Fe3+ half cell. Remember that the Eocell obtained form the graph is for the entire cell where Eocell = ECu, ox+ EoFe(III),red and EoCu,ox = -0.34 V.
Determine a percent error based on the cited Fe(III)/F(II) redutction potential of +0.77V
Equation of best fit line : Y = -0.0215x + 0.3
where Y = Ecell, m=slope = -RT/nF, x = ln(Q), and b = y-int = Eocell
E cell (volts) Ln(Fe2+/Fe3+)
0.333 0
0.234 2.302585
0.333 -2.302585
