Statement I:A selective estimation of $\mathrm{Ca}^{2+}$ and $\mathrm{Mg}^{2+}$ ions cannot be done

Question

Statement I:A selective estimation of $\mathrm{Ca}^{2+}$ and $\mathrm{Mg}^{2+}$ ions cannot be done by E.D.T.A\ Statement II: Both $\mathrm{Ca}^{2+}$ and $\mathrm{Mg}^{2+}$ ions from stable complexes with EDTA\

Professor PC Thomas Classes · Answer

Through both the complexes are stable due to the considerable difference in stability constants, the ions $\mathrm{Ca}^{2+}$ and $\mathrm{Mg}^{2+}$ can be selectively estimated.\