To determine the formation constant of a I: 1 complex. the absorbances belowwere

Chapter 14, Problem 14-23

(choose chapter or problem)

To determine the formation constant of a I: 1 complex. the absorbances belowwere measured at 470 nm in a 2.50-cm cell for the ligand concentrations shown.The total metal concentration was CM = 7.50 X 10 4 M.(a) Use linear regression and the Benesi-Hildebrand equation (Equation 1411)to determine the formation constant and the difference in molar absorptivitiesat 470 nm.(b) Use nonlinear regression and Equation 14-10 to find the values of K, and j.e.Start with initial estimates of K, = 50 and j.e = 50.

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