Calcium ion forms a weak 1:1 complex with nitrate ion with a formation constant of 2.0. What would be the equilibrium concentrations of Ca2+ and Ca(NO3)+ in a solution prepared by adding 10 mL each of 0.010 M CaCl2 and 2.0 M NaNO3? Neglect diverse ion effects.
Calcium ion forms a weak 1:1 complex with nitrate ion with a formation constant of 2.0. What
would be the equilibrium concentrations of Ca2+ and Ca(NO3)+ in a solution prepared by
adding 10 mL each of 0.010 M CaCl2 and 2.0 M NaNO3? Neglect diverse ion effects.
6. The formation constant of the silver–ethylenediamine complex, Ag(NH2CH2CH2NH2)+, is
5.0 × 104. Calculate the concentration of Ag+ in equilibrium with a 0.10 M solution of the
complex. (Assume no higher order complexes.)
7. What would be the concentration of Ag+ in Problem 6 if the solution contained also 0.10 M
ethylenediamine, NH2CH2CH2NH2?
8. Silver ion forms stepwise complexes with thiosulfate ion, S2O3
2−, with Kf 1 = 6.6 × 108 and
Kf 2 = 4.4 × 104. Calculate the equilibrium concentrations of all silver species for 0.0100 M
AgNO3 in 1.00 M Na2S2O3. Neglect diverse ion effects.
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