To determine the formation constant of a 1:1 complex, the
following absorbances were measured at 470 nm in a 2.50-cm cell for the ligand
concentrations shown. The total metal concentration was cM = 7.50 10-4
(b) Use nonlinear regression and Equation 14-10 to find the
values of Kf and Δe. Start with initial estimates of Kf
= 50 and De = 50.