S
seven
Guest
I've already experimentally determined the value of Keq for the reaction of Fe3+ with SCN-. Now I have to answer this question, and I don't know how to approach it:
"Use the value of Keq determined in this experiment to calculate the fraction of Fe(III) that is complexed and the fraction of Fe(III) that is uncomplexed in solutions containing a large excess of thiocyanate ion over Fe(III). Begin by deriving an algebraic equation for these fractions (ie, fcomp and funcomp) as a function of thiocyanate concentration. Calculate these fractions at 10-20 values of [SCN-] ranging from 1 to 1.0E-2...."
"Use the value of Keq determined in this experiment to calculate the fraction of Fe(III) that is complexed and the fraction of Fe(III) that is uncomplexed in solutions containing a large excess of thiocyanate ion over Fe(III). Begin by deriving an algebraic equation for these fractions (ie, fcomp and funcomp) as a function of thiocyanate concentration. Calculate these fractions at 10-20 values of [SCN-] ranging from 1 to 1.0E-2...."