Q: Use the potentiometric cell below: SCE || Cu(X)2+ (aq, A = 0.500 M), lig (aq, A = 0.0010 M) | Cu(s)…
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Q: A sample of an Iron Oxalato complex salt weighting 0.135 grams requires 32.33 mL of 0.013 M KMnO4 to…
A: The chemical reaction between KMnO4 and iron oxalate salt in the acidic condition is shown below.
Q: Calculate the molar solubility of MnS in a solution with a constant [H3O+] of a. 1.00 x 10-5 b.…
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Q: Calculate the [F] in 250mL of a saturated solution of ThF4. Ksp = 4.0 x 10-28 %3D
A: One mole of ThF4 will dissociates into one mole of Th4+ and four moles of fluoride ions.Solubility…
Q: Solve this gravimetric analysis problem. For the determination of Zn (AW = 65) gravimetrically in a…
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Q: alculate the amount of manganese (54.94 g/mol) from a processed ore using the following data.
A: Solution: Blank titration part: Here we have 0.1012 g of manganese ore. Which is digested with…
Q: If 28.70 mL of 0.0200 M KMnO4 is required to titreate a 0.250 g sample of K3[Fe(C2O4)3]x3H20, what…
A: The given data contains, Volume of KMnO4 = 28.70 ml. Molarity of KMnO4=0.0200 M.
Q: What is the concentration of Cd2+ in a 0.016 M Cd(NO3)2 solution that is also 1.0 M NH3? For…
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Q: How many grams of PbF2 (molar mass = 245.2) will dissolve in 700 mL of 0.60 M NaF solution? The Ksp…
A: PbF2 ---> Pb2+ + 2F- Ksp = [Pb2+] [F-]2 2.69 × 10-8 = x ( 2x + 0.60 )2 (2x + 0.60 ≈ 0.60…
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Q: Will zinc carbonate (ZNCO3) precipitate from an aqueous solution containing 0.0081 M Zn(NO3)2,…
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Q: The following measurements were recorded for standard solutions of metal complexes with EDTA using a…
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Q: If 21.70 mL of 0.0500 M KMnO4 is required to titrate a 0.450 g sample of K3[Fe(C2O4)3]⋅3H2O,…
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Q: 4. Consider the Latimer diagram shown below for Cr (acidic solution): E° = ? +0.55 +1.34 +2.10…
A: The explanation is given below-
Q: DG° = -53.6 kJ/molxn for the following reaction at 25°C. Zn2"(aq) + 4 NH3(aq) ==> Zn(NH3)42 (aq)…
A: The relation between ΔG° and complex formation equilibrium constant is ΔG° = − RT ln Keq where, ΔG°…
Q: How many grams of PbF2 (molar mass = 245.2) will dissolve in 300 mL of 0.30 M NaF solution? The Ksp…
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Q: Look at sample problem 19.14 in the 8th ed Silberberg book. In black-and-white film developing,…
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Q: A solution contains 3.0 mg of Fe?*/ liter. The Fe2* is converted into a complex with 1,10-phenan-…
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Q: The hardness of a water sample may be determined by titrating a 100-mL sample of water with 0.010 M…
A: The above question can be solved using the formula M1V1= M2V2
Q: If 28.80 mL of 0.0200 M KMnO4is required to titrate a 0.250 g sample of K3[Fe(C2O4)3]⋅3H2O,⋅what…
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Q: 50.00 mL of a solution containing both Ni2* and Pb²+ ions requires 46.32 ml of a 0.02041 M EDTA…
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Q: Cerium. 2. Why is it not advisable to dissolve KMnO4 in conc. H₂SO4?
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Q: The Ksp of CaF2 is 1.6 x 10 What is the concentration of F- in solution?
A: Ksp = 1.6 × 10-6
Q: The resistance of a saturated solution of PbSO4 (very insoluble salt) at 291K is of 1.7x106 Ω, being…
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Q: very useful in identifying unknowns. Unknowr solution #2 is bright blue. Once you have identified…
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Q: A sample weighing 650 mg containing KCI, BaCl2 and inert materials was dissolved in sufficient water…
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Q: PtCl4.2HCl has a secondary valence of 6. Hence, 6 mol of AgCl precipitate will be formed in excess…
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Q: 3. For the determination of Zn (AW 65) gravimetrically in a sample it is precipitated and weight as…
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Q: 2. The concentration of the generic Z2 ion in a solution saturated with Ag2Z is 3.0 x 10°M.…
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Q: You want to determine the amount of iron(III) in acomplex salt. You make a 100.0 mL solution of the…
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Q: The solubility of Cr(OH)3 is measured and found to be 1.31x10-6 g/L. Use this information to…
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Q: 4. Potassium dichromate is often used to standardize reducing agents like Fe2+: Cr:0, + 6Fe +14 H*…
A: Given data,Volume of Fe2+=34.00mL=0.034LMass of K2Cr2O7=398.5mg=0.3985gMolar mass of…
Q: Calculate the standard potential E0 for the process Ni(CN)42- + 2e- ⇄ Ni(s) + 4CN- given that the…
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Q: How many moles of Na2S2O3 are needed to dissolve 0.219 mol of AgBr in a 1.00 L solution if the Ksp…
A: We should know the equations as given below Hint : the relationship between Keq and Ksp
Q: When I was a boy, I watched Uncle Wilbur measure the iron content of runoff from his banana ranch.…
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- Use the formation constant of [Au(CN)2] in Appendix K to determine the equilibrium concentration of Au+(aq) in a solution that is 0.0071 M CN and 1.1 104 M [Au(CN)2]. Is it reasonable to conclude that 100% of the gold in solution is present as the [Au(CN)2] complex ion? Explain.We titrate 25.0 cm3 of 0.012 M K4[Fe(CN)6] solution with 0.020 M K3[Fe(CN)6] solution. Whatwill be the concentration of the oxidized and reduced forms in the mixed solution after the addition of16.2 cm3?The amount of Fe (55.85g/mole)in a 16.9776-g sample of an ore was determined by a redox titration with K2Cr2O7. The sample was dissolved in HCI and the iron brought into the +2 oxidation state using a Jones reductor. Titration to the diphenylamine sulfonic acid end point required 43.7238 mL of 0.1351 M K2Cr2O7. Report the iron content of the ore as %w/w Fe2O3 (159.69g/mole) (Answers should be written in 2 decimals place and do not include the UNIT)
- The following questions refer to the following system: 500.0 mL of 0.020 M Mn(NO3)2 are mixed with 1.0 Lof 1.0 M Na2C2O4. The oxalate ion, C,O4, acts as a ligand to form a complex ion with the Mn2* ion with a coordination number of two. Mn2+ + C2042- MNC2O4 [Mn(C,04)2]= MNC2O4 + C,O,²- K1 = 7.9 × 103 K2 = 1.26 x 10-2 %3D Find the equilibrium concentration of the Mn2* ion. 9.2 x 10-5 M 0.01 M 2.5 x 10-8 M 1.3 x 104 M O 6.7x 10-3 MWhat mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained from 650 mL of 0.0170 M aqueous solution of LaCl3 by adding a stoichiometric amount of sodium oxalate ? with solution/explanationWhich of the following salts does NOT cause permanent hardness? A FeCl, B CaCl, © Ca(HCO,), (НСО ,), D MgSO 4
- Use the data provided for stock concentration and mass to calculate the concentrations of each solution. Solution A) A stock solution of 0.0100 M solution of K3[Fe(CN)6] is provided. Calculate the volume of the stock solution needed to prepare 100.0 ml of .00200 M K3[Fe(CN)6]. Deionized water should be used to dilute the solution. Solution B) Calculate the volume of solution A needed to prepare 50.0 ml of .0010 M K3[Fe(CN)6]. Deionized water should be used to dilute this solution.The following questions refer to the following system: 500.0 mL of 0.020 M Mn(NO3)2 are mixed with 1.0 L of 1.0 M Na2C2O4. The oxalate ion, C2O4, acts as a ligand to form a complex ion with the Mn2+ ion with a coordination number of two. Mn2+ + C2O4 2– MnC2O4 K1 = 7.9 x 10^3 [Mn(C2O4)2] 2– MnC2O4 + C2O4 2– K2 = 1.26 x10^–2 Find the equilibrium concentration of the [Mn(C2O4)2]2– ion.+2 Q3/ the dissociation constant for [Cu(NH3)4]*? complex is 2.1x10°. The solubility product constant for CuCl, is 1.72x10"'.How many grams of CuCl2 will dissolve in 100ml 1M NH3 solution? +2 CuCl%) + 4NH3(aq) [Cu(NH3)4] (aq) +2CI" (aq)
- The amount of Fe (AW 55.85) in a 0.4891-g sample of an ore was determined by a redox titration with K2Cr2O7 (FW 294.20). The sample was dissolved in HCl and the iron brought into the +2 oxidation state using a Jones reductor. Titration to the diphenylamine sulfonic acid end point required 36.92 mL of 0.02153 M K2Cr2O7. Report the iron content of the ore as %w/w Fe2O3 (FW 159.70). a. 54.46 % b. 12.98 % c. 77.86 % d. 31.45 %A Chemist collected a 0.4891-g sample of an ore for Fe determination by a redox titration with K2Cr2O7.The ore was carefully crushed prior to weighing and dissolved in HCl and using a Jones reductor the ironin the sample was brought into the +2 oxidation state. After titration with diphenylamine sulfonic acid,itrequired 36.92 mL of 0.02153 M K2Cr2O7 to reach the end point. Show your solution why 77.86% is the iron content of the ore as %w/w Fe2O3.A Chemist collected a 0.4891-g sample of an ore for Fe determination by a redox titration with K2Cr2O7.The ore was carefully crushed prior to weighing and dissolved in HCl and using a Jones reductor the ironin the sample was brought into the +2 oxidation state. After titration with diphenylamine sulfonic acid,itrequired 36.92 mL of 0.02153 M K2Cr2O7 to reach the end point. Calculate the iron content of the ore as%w/w Fe2O3