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What effect would it have on calculated value of Ksp if insufficient time was allowed for the Ca(IO3)2 solution to reach equilibrium?
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- Given that the Ksp for silver chloride is 1.76 x 10-10, and the Kf of silver(I) diammine cation [Ag(NH3)2 +] is 1.7 x 107, calculate the maximum number of grams of silver chloride that will dissolve in 250.0 mL of a 3.25 M solution of ammonia.Why is EDTA complex formation less complete at lower pH?The ionization constant Ka for nitrous acid is 4.6x10⁻⁴. What are the the pKa for nitrous acid and the pH of a 0.1 M solution of this weak acid?
- What is the equilibrium constant for the following reaction, provided that the Ksp for Barium Sulfate is 1.3x10-10 and the Ksp for Lead (II) Sulfate is 1.6x10^-8. PbSO4 (s) + Ba2+ (aq) BaSO4 (s) + Pb2+ (aqThe iron content of a large lump of ore is determined by taking a single small sample, dissolving it in acid, and titrating with ceric sulphate after reduction of Fe (III) to Fe (II). What are the possible source of random and systematic errors?If the unknown consisted of Co+2, Fe+2, Sr+2, and Ni+2, which cation would completely complex with EDTA first, second, then third during the complexometric determination of magnesium.
- In the iron (II)-silver ion system performed in the experiment, all of the following successfully confirmed that each of the chemical species is present in the system EXCEPT. -Formation of white precipitate when HCl was added in the system -Deposition of silvery solids when FeSO4 and AgNO3 were mixed together -Formation of dark blue solution when K3Fe(CN)6 was added in the system -Transformation of pale orange to solution into a blood red solution when KSCN was added in the systemGiven: You weigh out exactly 0.200 g of Fe(NH4)2(SO4)2·6H2O and dissolve it in the 100.00 mL volumetric flask. You then pipette 2.00 mL of this solution into the 50.00 mL volumetric flask to prepare the stock standard tris-bipyridyl-iron(II) solution. a. Calculate the molar concentration of iron(II) in this solution in the 50.00 mL volumetric flask. (The MW of Fe(NH4)2(SO4)2·6H2O is 392.14 g/mol) (answer a given the information above)The conditional formation constant at pH 8 for silver-EDTA complex is 6.66x104. What is the value of the constant that governs the reverse reaction? a) 1/6.66x10-4 b) 6.66x10-4 c) 1/6.66x104 d) -6.66x104