Solve the gravimetric problem. - 1 attachmentCALCULATION PROBLEMSGravimetric ProblemsA 0.6812-g sample of a mixture consisting of NaBr, Nal, and NaNO, was analyzed by addingAGNO, to precipitate the Br – and l-, yielding a 1.1086-g mixture of AgBr and Agl. The precipitatewas then heated in a stream of C12, converting it to 0.8125 g of AgCl. Calculate the %w/w NANO3in the sample.

CALCULATION PROBLEMS Gravimetric Problems A 0.6812-g sample of a mixture consisting of NaBr, Nal, and NaNO, was analyzed by adding AGNO, to precipitate the Br – and -, yielding a 1.1086-g mixture of AgBr and Agl. The precipitate was then heated in a stream of C12, converting it to 0.8125 g of AgCl. Calculate the %w/w NaNO3 in the sample.

CALCULATION PROBLEMS Gravimetric Problems A 0.6812-g sample of a mixture consisting of NaBr, Nal, and NaNO, was analyzed by adding AGNO, to precipitate the Br – and -, yielding a 1.1086-g mixture of AgBr and Agl. The precipitate was then heated in a stream of C12, converting it to 0.8125 g of AgCl. Calculate the %w/w NaNO3 in the sample.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 14.97QE: According to the Resource Conservation and Recovery Act (RCRA), waste material is classified as...

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68. Aluminum ion may be precipitated from aqueous solution by addition of hydroxide ion, forming Al(OH)3. A large excess of hydroxide ion must not be added, however, because the precipitate of Al(OH)3 will redissolve as a soluble compound containing aluminum ions and hydroxide ions begins to form. How many grains of solid NaOH should be added to 10.0 mL of 0.250 M A1Cl3 to just precipitate all the aluminum?
Perform these calculations for nickel(II) carbonate. (a) With what volume of water must a precipitate containing NiCO3 be washed to dissolve 0.100 g of this compound? Assume that the wash water becomes saturated with NiCO3(Ksp=1.36107). (b) If the NiCO3 were a contaminant in a sample of COCO3(Ksp=1.01012), what mass of COCO3 would have been lost? Keep in mind that both NiCO3 and COCO3 dissolve in the same solution.
According to the Resource Conservation and Recovery Act (RCRA), waste material is classified as toxic and must be handled as hazardous if the lead concentration exceeds 5 mg/L. By adding chloride ion, the lead ion will precipitate as PbCl2, which can be separated from the liquid portion. Once the lead has been removed, the rest of the waste can be sent to a conventional waste treatment facility. How many grams of sodium chloride must be added to 500 L of a waste solution to reduce the concentration of the Pb2+ ion from 10 to 5 mg/L?
When 300.0ml of 0.700M Na2S and 200.0ml of 0.900M Fe(NO3)3 solutions are mixed together the reaction below occurs: 3Na2S(aq) + 2Fe(NO3)3(aq) ----> Fe2S3(s) 6NaNO3(aq) What will be the maximum theoretical yield of precipitate, in moles?
A 12.63 g sample of calcium ore was dissolved in HCI and gravimetrically analyzed, through the precipitation of calcium into CaC2O4 * H2O The precipitate was filtered. washed, dried, and ignited at 500 degrees C until the weight was constant, giving a final mass of 2.35 grams pure CaCo3 (100.087g /mol) Calculate the % Calcium 140.078g / mol in the sample.
In the laboratory, strontium chromate (Ksp = 3.6 x 10-5) can be prepared by mixing solutions containing strontium ions and chromate ions, will a SrCrO4 precipitate be observed in the following? a. A solution has the following initial concentrations [Sr2+]= 6.0 x 10-13 M and [CrO4 2-]= 3x10 -3M B. 275 mL of 6.0x10 -3 Sr(NO3)2 solution is mixed with 825 mL of 0.040 M K2CrO4.
You choose to investigate some of the solubility guidelinesfor two ions , the chromate ion(CrO4)-2 and the oxalate ion (C2O4) - 2. You are given 0.01 Msolutions (A, B, C, D) of four water-soluble salts: When these solutions are mixed, the following observationsare made as given in table: (a) Write a net ionic equation for the reaction that occurs ineach of the experiments. (b) Identify the precipitate formed,if any, in each of the experiments.
A solution is prepared by adding 0.012 mol of NaCl to 1.00 L of 0.0863 M Pb(NO2)3. Which of the following statements is corret? (Ksp= 1.7e-5 for PbCl2)a) Both sodium nitrate and lead(II) chloride precipitate.b) The data is not sufficient to predict precipitation.c) Lead(II) chloride precipitate until the solution is saturated.d) The solution is unsaturated and no precipitate forms.e) Sodium nitrate precipitate until the solution is saturated.
A 12.63 g sample of calcium ore was dissolved in HCl and gravimetrically analyzed, through the precipitation of calcium into CaC2O4 · H2O. The precipitate was filtered, washed, dried, and ignited at 500 oC until the weight was constant, giving a final mass of 2.35 grams pure CaCO3 (100.087 g/mol). Calculate the % Calcium (40.078 g/mol) in the sample.
three solutions are mixed together to form a single solution ; in the final solution, there are 0.2 mol Pb(CH3COO)2, 0.1 mol NA2S and 0.1 mol CACL2 present. which solid(s) will precipitate?
If a solution contains 0.0020 mol of CrO42−CrO42− per liter, what concentration of Ag+ ion must be reached by adding solid AgNO3 before Ag2CrO4 begins to precipitate? Neglect any increase in volume upon adding the solid silver nitrate.
A sample of solid Eu(OH)3 was stirred in water at a certain temperature until the solution contained as much dissolved Eu(OH)3 as it could hold. A 650-mL sample of this solution was withdrawn and titrated with 1.33e-05 M HBr. It required 21 mL of the acid solution for neutralization.What is the solubility of Eu(OH)3 in water, at the experimental temperature, in grams of Eu(OH)3 per liter of solution? a) The solubility is 7.06e-10 g/L. b) The solubility is 8.72e-05 g/L. c) The solubility is 0.000262 g/L. d) The solubility is 2.91e-05 g/L. e) The solubility is 6.08e-06 g/L.