What is the mass percent of Fe for each trial ?   Mass of (NH4)2Ce(NO3)6 (in 100.00 mL) =   4.5038 g             Mass of unknown (in 250.00 mL) = 10.000 g     Trial # Volume of unknown solution (mL) Titration Volume (mL of Ce4+) Mass Percent (% Fe) 1 25.00 mL 7.20 mL   2 25.00 mL 7.40 mL   3 25.00 mL 7.60 mL   4 25.00 mL 7.50 mL

Q: In what molar ratio do the titrant and KHP react

A: Given:   Trial-1 Trial-2 Trial- Mass of KHP (g) 0.3130 0.3040  0.3059 Final burette reading…

Q: A solution of HClO4 was standardized by dissolving 0.4008 g of primary-standard-grade HgO in a…

A: Weight of primary-standard-grade HgO = 0.4008 g  Volume of the acid = 43.75 mL Molar concentration…

Q: A mixture containing only KCl and NaBr is analyzed by the Mohr method. A 0.3172-g sample is…

A: Concentration: It is the ratio of number of moles of solute dissolved in per litre of solution.

Q: 2) If 5.0 mL of 0.00200 M Fe(NO3)3 is diluted to 50.0 mL, what is the concentration of Fe3+ in the…

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute…

Q: What is the concentration of a standardized HCl solution that required 50.78 mL of HCl to titrate…

A: we need to find the concentration of HCl needed for the titration

Q: A solution of HNO3 is standardized by reaction with pure sodium carbonate 2H+ + Na₂CO3 → 2Na+ + H₂O…

A: The objective of the question is to determine the molarity of the HNO3 solution and the absolute…

Q: 2 HyPOalaq) + 3 Mg(OH)2(ag) = Mga (P04/21s) + 6 H201 If 35.0 mL of 1.67 M HsP04 are reacted with…

A: This question is based on stoichiometry.

Q: Titration of a 0.485 g sample by Mohr method required 36.80 mL of the standard 0.1060 M AgNO3…

A: The complete balanced reaction ;     Cl- + Ag+  →  AgCl(s) Given in the question, Mass of sample =…

Q: When mixed in appropriate amounts, each of the following mixtures can produce an effective buffer…

A: Given: A) NaOH and HF B) HCl and NaH2PO4 C) NaH2PO4 and Na2HPO4  D) HCl and NH4Cl E) NaHCO3 and…

Q: 3. The ethyl acetate concentration in an alcoholic solution was determined by diluting a 10.00-mL…

A:

Q: What is the concentration of a solution made with 0.245 moles of KOH in 400.0 mL of solution?

A: Given Moles of KOH = 0.245 moles Volume of solution = 400.0 ml

Q: 16. 0.20-M Mn2* and 0.010-M Cd? are mixed in a test tube. If NaOH is gradually added into the test…

A: Ksp is the multiplication of solubility of corresponding ions with their appropriate powers. Here…

Q: Determination #1 Determination #2 Determination #3 Final NaOH Burette Reading 37.65 mL 28.35 mL…

A: The neutralization reaction between NaOH and H2SO4 is represented as  2NaOH(aq)+ H2SO4(aq)---->…

Q: A solution of HNO3HNO3 is standardized by reaction with pure sodium carbonate.   2H+ + Na2CO3⟶2Na+…

A: Given Data Volume = 28.30 ± 0.06 mL =0.02830± 0.0006 L 0.8450 ± 0.0009 g  of Na2CO3, (FM 105.988 ±…

Q: You are preparing standard acid and base solutions for the laboratory, using potassium hydrogen…

A: we have to calculate the molarity of HCl

Q: You determine the acetic acid content in vinegar by titrating with a standard (known concentration)…

A: Given: weight of vinegar=5.023±0.003 g Molarities of NaOH in 3 trials = 0.1167, 0.1163, 0.1164 M…

Q: The solubility-product constant for Ce(103)3 is 3.2 × 10 1. What is the Ce solution prepared by…

A:

Q: Questions 5-10 refer to the same weak acid/strong base (WA/SB) titration. The Ka of hypobromous acid…

A: At equivalence point,  Number of equivalents of acid =Number of equivalents of base The balanced…

Q: add 0.1011 g of a primary standard FAS into a volumetric flask and diluted it to the line with…

A: FAS is ferrous ammonium sulphate and also known as Mohr salt. It's molecular weight is 392.14g/mol.…

Q: A 0.1064-g of aldrin pesticide sample was decomposed and the liberated chloride was extracted using…

A:

Q: A cvg.cengagenow.com [Referenc What volume of 0.941 M ot HCl, in milliliters, is required to titrate…

A:

Q: A 30.00 mL solution of 0.300 M hypobromous acid (HBrO) is being titrated with a solution that is…

A:

Q: A standard solution of (FeSCN)2+ was prepared by mixing 5.00 mL of 0.00200 M KSCN , 6.00 mL of 0.220…

A: The question is based on the concepts of solutions. we need to calculate total volume of the…

Q: None

A: To determine which phosphate species will precipitate first when Na₃PO₄ is added to the solution, we…

Q: 4. The tetraethyl lead [Pb(C2H5)4] in a 25.00-ml sample of aviation gasoline was shaken with 15.00mL…

A: A numerical problem based on mole concept, which is to be accomplished.

Q: 150.0 mL of 0.2105 M HNO3 was added in excess to 1.3415 g CaCO3 (100.09 g/mol). The excess acid was…

A: Given - volume of HNO3 = 150.0 mL             Molarity of HNO3 = 0.2105 M             Mass of CaCO3…

Q: 22.5 mL of an HNO3 solution were titrated with 31.27 mL of a 0.167 M Ca(OH)2 solution to reach the…

A:

Q: The iron in a 6.24 g sample containing Fe₂O3 is reduced to Fe2+. The Fe²+ is titrated with 10.48 ml…

A: The objective of this question is to find the percentage of iron (Fe) in a given sample using the…

Q: Calculate the concentration of IO3 in a 1.19 mM Pb(NO3)₂ solution saturated with Pb(IO3)2. The Ksp…

A: The reaction is represented as follows: Pb(NO3)2 → Pb2++2NO3- Concentration of Pb(NO3)2 = 1.19 mM =…

Q: A 25.0 mL solution of HNO3 is neutralized with 16.5 mL of 0.250 M Ba(OH)2. What is the concentration…

A:

Q: The calcium in a 5.00-mL serum sample is precipitated as CaC2O4 with ammonium oxalate. The filtered…

A: Number of moles of KMnO4 , n n = Molarity x volume in L   = 0.00100 F x 4.94 mL x10-3L/ml  =…

Q: When standardizing two liters of a potassium permanganate solution with a primary standard solution…

A: The objective of this question is to determine the mass range of sodium oxalate that should be…