A mixture containing iodide is analyzed by the Volhard method. 0.6712 g of the sample is reacted with 50.00 mL of 0.05619 M AGNO3. The precipitate formed is removed by filtration and the excess Ag+ is back titrated with KSCN 0.05322 M, requiring 35.15 mL to reach the end point. Calculate the concentration of iodide in the sample in parts per million (mg/kg).

Q: A 50.00 mL aliquot of saline solution was acidified with dilute nitric acid and  titrated with 22.00…

A: In the given method to determine NaCl or Cl-(aq) content in saline, first, excess Ag+(aq) is reacted…

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: The arsenic in a 2.345g sample of a pesticide was converted to H 3 AsO4 by suitable treatment. The…

A: Molarity is defined as the number of moles of solute per litre of the solution. It is denoted as M.…

Q: A 0.6407-g sample containing chloride and iodide ions gave a silver halide precipitate weighing…

A: Given that the sample containing chloride ions and iodide ions resulted in a precipitate of mass…

Q: The flask contains 10.0 mL10.0 mL of HClHCl and a few drops of phenolphthalein indicator. The buret…

A: Given, The Volume of HCl = 10.0 mL. The molarity of HCl = x. The Volume of NaOH = 31.1 mL. The…

Q: Ammonium ions can be analyzed by precipitating withH2PtCl6 as (NH4)2PtCl6 and then igniting the…

A: The precipitation of the platinum metal by the ammonia complex takes place as follows: NH42PtCl6…

Q: In an air pollution analysis, 3 L of polluted air is passed through 50 mL of 0,0116 M Ba (OH) 2…

A:

Q: Potassium hydrogen phthalate (KHP) is often used as a primary standard in acid–base titrations. If…

A:

Q: 0.250 g sample of impure CaCl2 is titrated with 40.00 mL  0.105 M AgNO3 solution. Calculate the…

A: Given: 1) Mass of impure CaCl2 = 0.25 g 2) Volume of AgNO3 = 40 mL 3) Concentration of AgNO3 = 0.105…

Q: Addition of an excess silver nitrate to a 0.5012 g sample yielded a mixture of AgCl and Agl that…

A: Excess silver nitrate was added to a mixture containing NH4I and NH4Cl.…

Q: A 2.00 mL sample of serum is analyzed for protein by the modified Kjeldahl method. The sample is…

A: Given, mass of sample of serum = 2.00 mL Volume of HCl = 15.0 mL Acid consumed = 33.3 mL Mass of…

Q: A 100.0 mL water sample was mixed with 25.00 mL of 0.002517 M K₂Cr₂O7 (294.2 g/mol) to oxidize Fe²*…

A: Given data:Volume of sample = 100 mLVolume of K2Cr2O7 = 25 mLMolarity of K2Cr2O7 = 0.002517 MVolume…

Q: Iodide concentration in a 0.6712-g sample was analyzed by titrating it with exactly 50.00 mL of…

A:

Q: A two-liter sample of mineral water was evaporated to a small volume, following which the potassium…

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Q: As part of a soil analysis on a plot of land, a scientist wants to determine the ammonium content…

A: · A 5.095 g soil sample was dissolved to give 0.500 L of solution.· And a 150.0 mL aliquot was…

Q: The solubility product of a sparingly soluble salt, XF2, was determined by titration and found to be…

A: This means effective concentration of constituent ions in solution. Hence from it we can calculate…

Q: Part B: Sulfate. A 1.109 g sample of a material known to contain sulfate is dissolved and the…

A: A sample containing sulfate ion is precipitated with Pb(II) ions as PbSO4.The weight of the…

Q: A 50.0 mL solution of Ca(OH)2 with an unknown concentration was titrated with 0.340 M HNO3. to reach…

A:

Q: A sample containing phosphorus weighs 4.2580g. The phosphorus in the sample is converted into…

A: Number of moles of a substance is equal to the weight of the substance divided by the molar mass of…

Q: The CO in a 20.3-L sample of gas was converted to CO2 by passing the gas over iodine pentoxide…

A: Given reactions are:  I2O5(s) + 5CO (g) → 5CO2(g) + I2 (g) I2(aq) + 2S2O32- (aq) → 2I-(aq) + S4O62-…

Q: Potassium hydrogen phthalate (KHP) is often used as a primary standard in acid–base titrations. If…

A: Given information: Volume of NaOH = 19.45 mL Gram of KHP = 0.397 g

Q: A 27.56 mL portion of a 0.337 M solution of hydrochloric acid, a monoprotic acid, is to be titrated…

A: The chemical reaction between KOH and hydrochloric acid(HCl):                   KOH + HCl → KCl +…

Q: The protein in a 1.2846-g sample of an oat cereal is determined by the Kjeldahl procedure for…

A: Initial concentration of HCl = 0.09552 M, In 1 L or 1000 ml moles of HCl = 0.09552 moles. In 50 ml,…

Q: Will KCIO precipitate when 20 mL of a 0.050 M solution of K is added to 80 mL of a 0.50 M solution…

A: Given data:Concentration of K+ ions = 0.050 M,Concentration of ClO4- ions = 0.50 M,Volume of K+ ions…

Q: The protein in a 0.2976 -g sample of cheese is determined by the Kjeldahl method. The sample is…

A: Given that -  Mass of the sample = 0.2976 g  HCl Molarity = 0.09756 M  Also normality of HCl same as…

Q: A solution containing KCl (74.551 g/mol) is analyzed by the Mohr method. A 0.5863 g sample is…

A: Solutions                                 Given that A solution containing KCl (74.551 g/mol) is…

Q: Ksp for PbCl2(s) is 1.6 x 10-. If you mix 200.0 mL of 0.010 M Pb(NO3)2(aq) with 400.0 mL of 0.010 M…

A: When two reactive compounds are mixed, then they react according to the stoichiometry of the…

Q: A sample weighing 10.91 g containing an unknown amount of H3PO4 was diluted with water and titrated…

A: A question based on mole concept that is to be accomplished.

Q: A 0.8729 g sample containing an unknown amount of Pb was dissolved in concentrated HNO3 and diluted…

A: Given that,  Amount of unknown sample of Pb, w = 0.8729g Amount of product Pb(IO3)2 ,  = 0.1278g…

Q: 5.00 mL aqueous sample containing hydrogen peroxide was diluted to 25 mL and analyzed by titration…

A: The balanced Chemical equation for Titration between permanganate ions and Hydrogen peroxide in…

Q: Iro

A: (a) This step is performed to dissolve any impurity present in the precipitate and to make sure to…

Q: NEUTRALIZATION From the previous lesson, you have learned that the Arrhenius theory defines…

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Q: A mass of 3.3214 g of sodium bicarbonate was dissolved and diluted to 250.00 ml of aqueous solution.…

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Q: A student weighs a sample of potassium hydrogen phthalate (KHP) to prepare a primary standard for a…

A: Given data,                 Mass of mixture = 4.678 g             Volume of solution = 100 mL…

Q: A 23.74-mL volume of 0.0981 M NaOH was used to titrate 25.0 mL of a weak monoprotic acid solution to…

A: When acid reacts with a base, it leads to the formation of salt and water. The chemical reaction for…

Q: Potassium hydrogen phthalate (KHPKHP) is often used as a primary standard in acid–base titrations.…

A:

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.