A sample of ore is treated with concentrated nitric acid and potassium chlorate to convert all of the sulfur to sulfate (SO42-). The nitrate and chlorate are removed by treating the solution with concentrated HCl. The sulfate is precipitated with barium (Ba2+) and weighed as BaSO4. Which is the main analyte in the sample?     Ba2+     SO42-     ClO3-     NO3-

Q: In the laboratory you are given the task of separating Ag* and Ba2* ions in aqueous solution. For…

A: Ag+ and Ba2+ ions  can be separated by adding a reagent if only one them form precipitate .…

Q: A 10.4 g sample of a mixture of NaCl and BaCl2 is treated with an excess of aqueous K2SO4. All of…

A: The mass of the mixture of NaCl and BaCl2 is = 10.4 g The mass of precipitates is = 5.82 g Percent…

Q: 1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in…

A: Amount of Ore obtained Fe=0.8525g Reaction involved  Fe3O4 + 8HCl ----------   Fe+2+2Fe+3 4Fe3O4  +…

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: 3.00- g sample of an alloy of Pb Lead was dissolved in nitric acid (HNO3). Sulfuric acid was added…

A: First Calculate mole by dividing Molar mass to the mass  Then use mole -mole relationship to get…

Q: A student weighs out 1.215 g of an impure KHP, dissolves the sample in 100. mL DI water and titrates…

A: kindly find the answer attached

Q: The net ionic equation below represents the standardization of potassium permanganate. 5 H2O2 (1) +…

A:

Q: Mass of H2C2O4•2H2O = 1.3245 grams  Molar Mass of H2C2O4•2H2O = 126.07 Volume of H2C2O4•2H2O…

A:

Q: In the laboratory you are given the task of separating Pb²+ and Cu2+ ions in aqueous solution. For…

A: Given,

Q: The diprotic acid lactic acid is produced as a result of anaerobic respiration. Raquel titrates the…

A:

Q: In the laboratory you are given the task of separating Ag" and Co* ions in aqueous solution. For…

A: Given Ag+ and Co2+   Y or N Reagent Formula of precipitate if yes  1   K2S   2   KBr   3…

Q: In an acid-base titration experiment, 36.44 mL of NaOH was placed in the Erlenmeyer flask and…

A: We have to predict the moles of NaOH present at end point.

Q: 12. A volume of 23.45 mL of NaOH was used to titrate a sample of KHP (KHC8H4O4) with a mass equal to…

A: The number of moles is equal to the ratio of mass to the molar mass of the substance. It is denoted…

Q: A sample of pure compound (CH3)4NB weighing 0.100 g was dissolved and treated with a reducing agent…

A: Given :  Mass of (CH3)4NBrw = 0.100 gm  Mass of AgBr ppt fromed = 0.200 gm  Molar mass of AgBr =…

Q: A 0.7785 g sample containing hydrazine (N2H4, rocket fuel) was dissolved and diluted to 250.0 mL in…

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

Q: A 10.00 ml. sample of Y(OH)2 was titrated to the stoichiometric point with 14.50 ml of 0.2345 M H2X.…

A: C) Given that: Volume of Y(OH)2 (V1) = 10.00 mL = 0.01 L Volume of H2X = 14.50 mL (V2) = 0.0145 L…

Q: Is a strong electrolyte in aqueous solution А NH3(g) В BH3(g) C H2(g) D H2S(g) HBr(g)

A: Strong electrolyte is that electrolyte which gets completely dissociate in aqueous solution.

Q: A sample of pearl ash (impure K2CO3) is titrated with 0.2500 N HCl. If the sample weighs 1.1000 g…

A: Normality is defined as the amount of solute expressed in the number of gram equivalents present per…

Q: What chemical reactions are involved in this analysis:   BH4-+ 8 Ag++ 8 OH-\rightarrowH2BO3-+ 8 Ag…

A: Redox reaction Oxidation reaction occurs when there is a loss of electron while a reduction reaction…

Q: A sample of ore containing Technetium weighed (4.470x10^3) g. This sample was heated in a solution…

A: Given:Molar mass of Tc(No3)3=284.03 g/molMolar mass of Tc2S3=292.20g/molMolar mass of Tc= 98.00…

Q: In an acid-base titration experiment, 36.44 mL of NaOH was placed in the Erlenmeyer flask and…

A: The number of moles of a substance is determined as the mass of a substance upon its molar mass. The…

Q: 1. H2SO4. The resulting solution contained excess acid and required 15.85 mL of 0.09850 M NaOH for…

A: The balanced equations are   CaCO3 + H2SO4 ----------> CaSO4 + CO2 + H2O    H2SO4 + 2 NaOH…

Q: The active ingredient in a zinc nutritional supplement is ZnSO, · 7 H,O (molar mass = 287.58 g/mol).…

A:

Q: Solutions of iron(III) nitrate (Fe(NO3)3) and calcium hydroxide (Ca(OH)2) are mixed, and allowed to…

A: Given  Reactant = Fe( NO3)3  , Ca( OH )2  Formula of precipitate = ?

Q: In the laboratory you are given the task of separating Ca2+ and Zn2+ ions in aqueous solution. For…

A:

Q: Potassium permanganate in acidic solution is used to titrate a solution of iron(II) ions, with which…

A:

Q: A 12.63 g sample of calcium ore was dissolved in HCI and gravimetrically analyzed, through the…

A: Answer: These question are based on the stoichiometric calculation, where by calculation the moles…

Q: In the titration of 10.00 mL sample of vinegar solution with 0.35 M NAOH as titrant, the initial…

A:

Q: Sulfate Determination by precipitation a. A generic equation is shown below where x and y represent…

A: A balanced chemical reaction is said to be balanced when number of atoms on reactant side should be…

Q: Potassium hydrogen phthalate (KHP, HC8H4O4K) is used to standardize sodium hydroxide. If 25.00 mL of…

A:

Q: An impure sample of sodium sulfate was dissolved in deionized water and titrated with 0.281 M barium…

A: Given that molarity of barium chloride = 0.281 M  Volume of barium chloride = 0.03465 L

Q: A sample of battery acid is to be analyzed for its sulfuric acid content. A 1.00-mL sample weighs…

A: Given information: Mass of sample = 1.256 g Concentration of barium hydroxide = 4.522×10-3 M Volume…

Q: 43. In the preparation of Rochelle salt (MW = 282.83 g/mol), 7.2 grams of monohydrated Sodium…

A: Given data: The mass of monohydrated sodium carbonate is 7.2 g. The molecular weight of…

Q: In the laboratory you are given the task of separating Ag+ and Co2+ jons in aqueous solution. For…

A: For separation of two ions from aqueous solution we have to use such salts which selectively forms…

Q: A sample of battery acid is to be analyzed for its sulfuric acid content. A 1.00-mL sample weighs…

A:

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: A 0,4500 g sample of a pesticide (DDT, C14H9Cl5, MM 354,49 g mol^-1) was decomposed with metallic…

A: Given that : Mass of sample of pesticide (DDT, C14H9Cl5) = 0.4500 g Molar mass of pesticide…

Q: Sn2+ can be analysed by reaction with excess Fe3+ and the Fe2+ produced is oxidised back to Fe3+…

A: Here we are required to find the moles of Sn2+ present which was analysed  by redox titration using…

Q: K2C204 • H2Olag) + CaCl2 • 2H2O(ag) → CaC2O4 • H2O(s) + 2KCI(ag) + 2H2O) Unspecified amounts of…

A: When CaCl2.2H2O is added to the supernatant, it reacted with the excess potassium oxalate…

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: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: In the laboratory you are given the task of separating Cat and Ag* ions in aqueous solution. For…

A: A precipitation reaction is the reaction with the formation of an insoluble salt when two soluble…

Q: In the laboratory you are given the task of separating Ca²* and Co²* ions in aqueous solution. For…

A: Given

Q: In the laboratory you are given the task of separating Ca2+ and Ag* ions in aqueous solution. For…

A: When  Ca2+ and Ag+ ions Present in the Solution, then using different type of reagents we can…

Q: 5. A 0.5664 g ore sample is dissolved in nitric acid and then filtered. The aluminum is present in…

A:

Q: In the titration of 10.00 mL sample of vinegar solution with 0.35 M NaOH as titrant, the initial…

A:

Q: 1.4890 g sample of M(OH)2 was mixed with 21.55 mL of 3.015 M HCl and enough water to make 100 mL of…

A: As from the reaction 1 mole of NaOH reacts with 1mole of HCl. Number of moles of NaOH = Molarity ×…

Q: 1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in…

A: A numerical problem based on isolation of metals, which is to be accomplished.

Q: 1. Determine the mass of CaCl2:2H2O (MW 147.02 g/mole) to weigh out using a four- place analytical…

A:

Q: In the gravimetric determination of barium (FW=137.33 g/mol) as BaCrO4 (FW=253.32 g/mol), what…

A: The ratio of mass of particular component to the mass of sample multiply by 100 is known as…

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for