Help me find the equilibrium concentration of FeSCN2 using t

Help me find the equilibrium concentration of Fe(SCN)2+ using the data given.

DATA Maximum Wavelength, max (Attach Graph) 455 nm Test tube # Absorbance (Measured) 0.389 0.372 0.338 0.242 0.172 0.082 RESULTS Initial Concentrations Equilibrium Concentrations Sample # Fe+ 1M 04M 016M 0064M 00256M SCN 1E-4M 1E-4M Fe(SCN)2* SCN 2 1E-4M 1E-4M 1E-4M 4 001024M 1E-4M Average value of K

Solution

equilibrium concentration of Fe(SCN)²⁺=ABSORBANCE/[Fe³⁺][SCN^-]

SAMPLE1:K_e=0.389/(0.1*1*e^-4)

=212.386

SAMPLE2:K_e=0.372/(0.04*1*e^*-4)

=507.76

SAMPLE3:K_e=0.338/(0.16*1*e^-4)

=115.33

SAMPLE4:K_e=0.242/(0.064*1*e^-4)

=206.44

SAMPLE5:K_e=0.172/(0.00256*1*e^-4)

=3668.31

sample6:K_e=0.082/(0.001024*1*e^-4)

=4372.11