Calculate pFe2+ at each of the points in the titration of 25.00 mL of 0.02164 M Fe²+ by 0.03639 M EDTA at a pH of 5.00. 10.00 mL pFe²+ = 2.30 the equivalence point, Ve pFe²+ = 4.81 17.00 mL pFe²+ = 6.92 0
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- In a potentiometric titration, at the equivalence point of 10 mL of 0.100 M Iron (II) in 0.500 M sulfuric acid with 10 mL of 0.0200 M permanganate (MnO4-). Calculate the equilibrium constant.What is the molar solubility of Ag2CO3 in an aqueous solution that is buffered to a pH of 2.37? Relevant constants: Ksp for Ag2CO3 = 8.1 x 10-12; K1 H2CO3 = 4.45x10-7; K2 for HCO3- = 4.69x10-11; Kw = 1.00x10-14.0.0322 M EDTA solution is used as the titrant in the titration of a 50.00 mL solution that is 0.0129 M in Cu2+. The solution is held at pH = 10.00 by a buffer that is 0.050 in ammonia (NH3). At what volume (in mL) of EDTA added will the equivalence point be reached?
- A cobalt (ii) solution wants to be examined by titration with 0.0415 M EDTA solution at ph 6.0. What will be the concentrations of cobalt(ii) ions in a titration of 30.0 ml and 0.0193 M cobalt (II) solution if a)12ml b)equivalent volume ,c) 16 ml EDTA are used in these titrations (K f =2.82*10^ 16 )A 50.0ml sample of water containing both Ca+2 and Mg+2 is titrated with 16.54ml of 0.01104M EDTA in an ammonia buffer of pH 10. Another 50.0ml sample is treated with NaOH to precipitate the Mg(OH)2 and then titrated at pH 13 with 9.26ml of the same EDTA solution. Calculate the ppm each of CaCO3 and MgCO3 in the sample.Calculate the molar solubility of AgSCN (Ksp = 1.1 x 10^-12) in a solution maintained at pH 9.00 and where the concentration of ammonia is 0.1 M. HSCN: pKa = 4.0 [Ag(NH3)2]^+ : Kf1 = 2.04 x 10^3; Kf2 = 8.13 x 10^3
- Calculate the following points on the titration curve for the reaction of 20.00 mL of 0.1075 M Pb4+ with 0.1250 M Cu+. The analytical reaction is Pb4+ + 2Cu+ ⇋ Pb2+ + 2Cu2+ and Pb4+ + 2e− ⇋ Pb2+ E° = 1.690 V Cu2+ + e− ⇋ Cu+ E° = 0.161 V After the addition of 17.20 mL of 0.1250 M Cu+. After the addition of 34.40 mL of 0.1250 M Cu+. What is the equilibrium constant for the reaction between Pb4+ and Cu+?A 50.00mL aliquot of a solution containing iron(II) and iron (III) required 13.73 mL of 0.01200 M EDTA when titrated at pH 2.0 and 29.62 mL when titrated at pH 6.0. Express the concentration of the solution in terms of the parts per million of each solute.Suppose titration of 100.00 mL mixture of 0.0500 M in Br + 0.08 M CI with 0.4000 M AgNO3. What is pAg at the second end point?
- Titration of 25.0 mL of a 0.0500 M Zn2+ solution with 0.0550 M EDTA in a solution buffered at pH 8. Assume that the temperature is 25 oC and that the formation constant for Zn2+ is 3.13 x 1016 at this temperature. What is the pZn at the equivalence point of the titration?A titration of 50.00 mL of 0.1100 M Fe3+ with 0.07750 M Sn2+ is carried out. The analytical reaction is 2Fe3+ + Sn2+ ⇋ 2Fe2+ + Sn4+ and Fe3+ + e− ⇋ Fe2+ E° = +0.732 V Sn4+ + 2e− ⇋ Sn2+ E° = +0.139 V What is the volume of Sn2+ is added at the equivalence point?A titration of 50.00 mL of 0.1100 M Fe3+ with 0.07750 M Sn2+ is carried out. The analytical reaction is 2Fe3+ + Sn2+ ⇋ 2Fe2+ + Sn4+ and Fe3+ + e− ⇋ Fe2+ E° = +0.732 V Sn4+ + 2e− ⇋ Sn2+ E° = +0.139 V What is the potential after 8.00 mL of Sn2+ has been added?