[Fe(SCN−)]2+ = [Fe3+] β1,1[SCN−]1 = 10-4,14. 103,03.10-2 = 10-3,11M[Fe(SCN−)2]+ = [Fe3+] β1,2[SCN−]2 = 10-4,14. 104,33.10-
4 = 10-381M[Fe(SCN−)3] = [Fe3+] β1,3[SCN−]3 = 10-4,14. 104,63.10-6 = 10-5,51M[Fe(SCN−)
4]− = [Fe3+] β1,4[SCN−]
4 = 10-4,14. 104,53.10-8 = 10-7,61M[Fe(SCN−)5]2−[r]