*SHOW COMPLETE SOLUTION* A 4.971g sample containing the mineral tellurite was dissolved and then treated with 50.00mL of 0.03114M K2Cr2O7: 3TeO2 + Cr2O7-2 + 8H+ → 3H2TeO4 + 2Cr+3 + H2O When the reaction is complete, the excess Cr2O7-2 required a 10.05mL back-titration with 0.1135M Fe2+. Calculate the percentage of TeO2 (MM 159.6) in the sample. 6Fe+2 + Cr2O7-2 + 14H+ → 6Fe+3 + 2Cr+3 + 7H2O Answer: 13.17% TeO2

Q: A 100.0-mL sample of spring water was treated to convert any iron present to Fe2*. Addition of…

A: Balanced equation of the reaction between Fe2+ and Cr2O72- indicates 6 moles of Fe2+ combines with 1…

Q: A 0.9352g sample of ore containing Fe³+, Al³+ and Sr²+ was dissolved and made up to 500.00 mL. The…

A: A numerical problem based on concentration terms that is to be accomplished.

Q: Use the following atomic masses (in g/mol): Ca = 40.08; C = 12.01; O = 16; Na = 23; Cl = 35.45…

A: 200 mg sample of pure calcium carbonate was acidified and dissolved in 500 mL of solution. A 50 mL…

Q: 20 mL of a mixture of ferrous sulfate (FeSO4) and ferric sulfate Fe₂(SO4)3 was titrated with 6.5 mL…

A: In this process at first the permanganate consumed will be for only Fe2+. All Fe3+ will be…

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: A 110.0-mL sample of spring water was treated to convert any iron present to Fe2+. Addition of…

A: Answer is 172.4 ppm

Q: 10.000 grams of Clay was analyze for Iron content. Its moisture content is 2.00%. The sample was…

A: Since you have posted multiple independent questions in the same request, we will solve the first…

Q: A 0.3674 g powdered milk sample was analyzed for calcium by igniting in a crucible at 1000°C, the…

A: Analysis of sampleMass of sample = 0.3674 gTemperature = 1000oCVolume of EDTA required = 15.62…

Q: A 0.9056 g sample of KBrO3 (MM=167.0) was dissolved in dilute HCl and treated with an unmeasured…

A: Moles of KBrO3 = 0.9056/167 = 0.00542  Moles of thiosulphate required = 6*0.005432 = 0.0325

Q: a. A 0.3108-g sample of primary-standard-grade Na2 C2O4 was dissolved in H2SO4 and titrated with…

A:

Q: A 5.0 mL solution containing 3.36 pm Fe(Ill) ions is diluted to 50.0 mL by first treating with an…

A: We must ascertain the concentration of the FeSCN2+ complex generated as a result of the interaction…

Q: The Tl in a 9.76-g sample of rodenticide was oxidized to the trivalent state and treated with an…

A: a) Direct titration In direct titration , a titrant of known concentration and volume is added to a…

Q: 0.9056 g sample of KBrO3 (MM=167.0) was dissolved in dilute HCl and treated with an unmeasured…

A: Practical chemistry:

Q: iii) Upon cooling the filtrate from step il, some tiny crystals appear in the filtrate. Addition of…

A: Hints given, 1M K2CrO2 is added to the filtrate. The filtrate turned into yellow colored…

Q: balance the reaction in acidic soln VO₂+ + Zn ➖➖➖➖➖ > VO+² + Zn+²

A: To balance this overall reaction we will first write oxidation half and reduction half reaction and…

Q: Which of the following salts does NOT cause permanent hardness? A FeCl, B CaCl, © Ca(HCO,), (НСО ,),…

A: The temporary hardness is to the presence of carbonates and bicarbonates of calcium and magnesium in…

Q: Write the cell notation of the potentiometric set-up with SCE as the reference electrode.   b)…

A: a) Anode II Cathode AgIAg+ IIHg2 cl2 IHg. cl-Anode 2Ag→2Ag+ +2e-CathodeHg2 cl2 +2e- →Hg+2cl- Solving…

Q: We titrate 25.0 cm3 of 0.012 M K4[Fe(CN)6] solution with 0.020 M K3[Fe(CN)6] solution. What will be…

A: Fe is present in its +2 oxidation state in K4[Fe(CN)6], (which is the reduced form) and is present…

Q: A 100.0-mL sample of spring water was treated to convert any iron present to Fe. Addition of…

A: Using back titration data we can calculate the concentration of K2Cr2O7 from that we can figure out…

Q: A second calibration standard solution of an iron(III) salicylate complex was prepared in two steps.…

A:

Q: eq• Calculate Keq-

A: 1. An equilibrium reaction is that reaction which can not go to 100% completion but is at a…

Q: The DO of a water sample used in a steel industry was tested by Winkler’s method. The following…

A: A question based on introduction to chemistry that is to be accomplished.

Q: To analyze the amount of iron (Fe; Mw =  55.85 g/mol) contained in an ore sample, the sample was…

A: Given in the question, Volume of EDTA = 25 ml Molarity of EDTA = 0.2922 M Total moles of EDTA =…

Q: Calculate the amount of manganese (54.94 g/mol) from a processed ore using the following data.…

A:

Q: A 2.2 gram sample of Pb₂O3 containing only inert impurities is treated with 20.0 mL of 6 N H₂SO4 and…

A:

Q: 10.00 mL of aqueous NaOCl is treated with excess potassium iodide, KCl, in an acidicsolution. The…

A: The objective of this question is to determine the molarity of the NaOCl solution. This can be done…

Q: A cyanide solution with a volume of 13.72 mL was treated with 25.00 mL of Ni2+ solution(which…

A: 4CN- + Ni2+ ----> Ni(CN)42-

Q: To measure the iron content of runoff from a ranch a 25.0 mL sample of run off was acidified with…

A: The Beer-Lambert’s law, the absorbance (A) is directly proportional to the concentration (c) of the…

Q: Solid residue weighing 7.158 g from an aluminum refining process was dissolved in acid to give Al³+…

A: Mass of the original mixture containing Al taken for analysis = 7.158 g

Q: The digestion of a 0 1432 g sample of a compound containing phosphorous in a mixture of HNO3 and…

A: Given: Mass of sample = 0.1432 g. Volume of NaOH added = 50.00 mL = 0.050 L…

Q: xt of cis-K[Cr(C204)2(H2O)2].2H2O= 6.36 g Mt of complex used in titration= 0.3 g xolume of KMNO4…

A: Coordination compounds are molecules that contain one or more metal centers that are attached to…

Q: 24-hr urine specimen was diluted to 2.000 L. After the solution was buffered to pH 10, a 10.00-mL…

A: Introduction :  EDTA (ethylenediaminetetraacetic acid) is a chelating agent. EDTA, is a chemical…

Q: A cyanide solution with a volume of 13.87 mL was treated with 24.00 mL of Ni+ solution (containing…

A: Concentration of CN- can be determined from the amount of Ni2+ used in the titration of CN-.

Q: 1. A 1.000 g sample containing Na,C,O, (MM=134 mg/mmol) is titrated with 40.00 mL of 0.0200 M KMNO,…

A: It is an application of redox titration where a redox reaction occur between KMnO4 as titrant and…

Q: You wish to measure the iron content of the well water on the new property you are about to buy. You…

A: data for  reference standard Fe3+ solution V1 = 14ml.  V2 = 60ml. M1 =5.74×10−4 M   , M2 =? path…

Q: The Cl– content of a solution was analyzed via an EDTA titration. 2.00 g of AgNO3 was added to 25.00…

A: It is an example of back titration. In such type of titration, two titrants are present, out of…

Q: QUESTION. a.) What is the concentration of the HClO₄ solution? b.) What is the concentration of the…

A: Given :  Mass of Na2CO3 sample = 0.2119 gm  Volume of HClO4 = 50.0 ml  Volume of NaOH used = 10.28…

Q: 5. 0.1500 g sample of chromium ore was dissolved and the chromium oxidized to chromate ion. The…

A: Answer: This question is based on the stoichiometric calculation where we have to convert the number…

Q: 0.5 g sample of an alloy containing 30% (m/m) iron (MM 55.84 g/mol) is dissolved in acid and diluted…

A: Mass of iron in alloy can be calculated using the formula:Mass % = (Mass of element / Mass of…

Q: If 39.4 g of AgNO3 react with 28.6 g of H2SO4 according to this UNBALANCED equation below, what is…

A: Balanced chemical Equation:-2AgNO3(aq)+H2SO4(aq)→Ag2SO4(s)+2HNO3(aq)

Q: Standard CaCO3 is used to standardize the EDTA solution prior to titration. Suppose 0.385 g of CaCO,…

A: Given that, Mass of CaCO3 = 0.385 g Number of moles of CaCO3 = Mass of CaCO3Molar mass of CaCO3=…