Chemical Forums
Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: AussieKenDoll on April 15, 2019, 06:47:51 AM

P is a solution containing two metal ions N3+ and N2+. the concentration of each is 0.01 mol dm3 . for EDTA Complexes the formation constants are log K(NY) =15 and log K(NY2)=10
At pH=6.0 fractional composition of Y4 is 1x10^6
with a masking agent(a ligand) L, N3+ forms a complex NL3+ the formation constant, log K(NL)=6
Derive an equation to determine the feasibility of selective titration of N2+ ions in the presence of N3+.
calculate the masking agent L to be added to 1.0 dm3 of the solution P such that only N2+ ions react with EDTA.
How do I derive the equation?
I attached the pic or how I tried to derive the equation but I'm not sure if its correct!