Calculate the [SCN] solution A, where 5.3 mL of 1.9x10^-3 M NaSCN is diluted to 42.0 mL with 0.1 M Fe(NO3)3.
Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A with 0.1 M Fe(NO3)3 to a final volume of 1.0101 mL.
Do this for 1.0, 3.0, 5.0, 7.0, and 9.0 mL.
Keq[Fe3+] = [FeSCN2+]/[SCN?]