If 0.3074 g of a mixture of pure KCl and KBr requires 30.98 mL of 0.1007 M AgNO3 solution for its titration, calculate the% KCl and KBr in the sample. (Pat Data: Cl, 35.453; Br, 79.904; K, 39.098)
Q: The digestion of a 0.1387-g sample of a phosphorus containing compound in a mixture of HNO, and…
A: Solution: Given: Mass of the sample containing phosphorus = 0.1387 gMolarity of NaOH solution =…
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: A solution of I3- was standardized by titrating freshly dissolved arsenious oxide (As4O6, FM…
A: The titration is a process in which the amount of solution required to neutralize the another can be…
Q: A 1.200-g sample of a mixture of NaOH (FW 40.00 g/mol) and NayCO3 (FW 105.99 g/mol) with inert…
A: The reaction between acid and base is termed as neutralization reaction. The products are salt and…
Q: (1) A 1.475 g containing NH,CI (FM 53.492), K¿CO, (FM 138.21), and other impurities was dissolved to…
A: To find:- weight percent NH4Cl and K2CO3 in the original solid. weight of K+ tetraphenylborate…
Q: Show by calculation how could you prepare 250 ml of 0.1N Na,CO; from the solid primar standard of…
A:
Q: A 0.64 g sample containing KCI (mw = 74.6 ) is dissolved in 50mL of water and titrated to the…
A: At end point milliequivalents of KCl and milliequivalents of AgNO3 are equal.
Q: Calculate weight percentage of Cl in the solid sample. A 0.4263-g solid sample containing NaCl and…
A: Titration is a laboratory quantitative technique in chemistry that is used to determine the…
Q: (a) Explain why Mg(OH)2 precipitates when CO32- ion isadded to a solution containing Mg2+. (b) Will…
A: GIVEN: Mass of Na2CO3 = 4.0 g volume of solution= 1.00 L
Q: A sample of soluble salt weighs 1.2 g and contains chloride, bromide and iodide. With AgNO3, a…
A: To Calculate the approximate percentage of chlorine, bromine and iodine in the sample
Q: If 3.0 ml of 0.02N H.SO, is required to titrate 200 ml of sample to the phenolphthalein endpoint,…
A: 1) Volume of sample titrated = V = 200 mL. Normality of acid = Z = 0.02 N Phenolphthalein end…
Q: Solve the following problem: Zinc in a 0.7457 g sample of foot powder was titrated with 22.57 mL of…
A: This is a type of complexometric titration of zinc with the help of this titration we can calculate…
Q: A 0.4755-g sample containing (NH,),C,O, and inert materials was dissolved in water and strongly…
A:
Q: A 0.2386-g sample contained only NaCI and KBr. It was dissolved in water and required 48.40 mL of…
A:
Q: How many grams of PbF2 (molar mass = 245.2) will dissolve in 300 mL of 0.30 M NaF solution? The Ksp…
A: Given information: Molar mass of PbF2 = 245.2 g Volume V = 300 ml 0.30 M NaF solution. KSP for PbF2…
Q: What volume of 0.05015N potassium thiocyanate solution would be required to titrate the excess from…
A: Solution - Normality and molarity are used to estimate the given problem - So , first we know that -…
Q: How many grams of CaF2 (molar mass = 78.077) will dissolve in 650 mL of 0.15 M NaF solution? The Ksp…
A: Given: Molar mass of CaF2 = 78.077 g Volume V = 650 ml = 0.650 L Concentration of NaF solution =…
Q: 1. 0.4960 g sample of CaCO3 (mw= 100) is dissolved in an acidic solution. The calcium is…
A: "Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: A 0.7336-g sample of an alloy that contains copper and zinc is dissolved in 8 M HCl and diluted to…
A: Given information: Mass of alloy = 0.7336 g Volume of the solution = 100 mL Mass of the sample…
Q: The mass of K3PO4 needed to prepare 250.0mL of an aqueous solution in which PO4-3 concentration is…
A:
Q: When 15.11 ml of 0.102 M K2SO4 solution reacts with 35.00 ml of 0.114 M Pb(C2H3O2)2. predict the…
A: Data given: Volume of K2SO4 solution = 15.11 mL = 0.01511 L (1 L = 1000 mL) Concentration of K2SO4…
Q: Step 1 :4.9668 g of Na2SO3 was dissolved in 30ml distilled water by heating. Step 2 : Then 6.0895g…
A: In a reaction, the interaction between the two reactants result in the formation of product. The…
Q: The volume of 0.0125 mol/L sodium thiosulfate used for titration is 98.7 mL. What is the amount of…
A:
Q: 5.31e-08 mol/L, what is the Ksp at this temperature? Ksp = (b) It is found that 9.14e-08 g of…
A:
Q: 2.4414 g sample containing KCl, K2SO4and inert materials was dissolved in sufficient water to give…
A: Mohr method is the method to determine the chloride ion concentration of a solution. This is done by…
Q: For the aqueous [Hg(NH3)4 complex K = 1.91 × 10 at 25 °C. 2+ Suppose equal volumes of 0.0058 M…
A: Given : Molarity of Hg(NO3)2 = 0.0058M Molarity of ammonia = 0.26M
Q: 1. A mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is…
A: Given that : The mass of the sample = 0.3172 g The volume of water = 50 mL The volume of AgNO3 used…
Q: 0.28g 0f MBr is dissolved in distilled water and made up to 250mL mark in a volumetric flask. 25 mL…
A: The titration of MBr by AgNO3 is a double-displacement reaction, which is given by,…
Q: Based from the given problem, What is the molecular weight of potassium biphthalate (C8H5KO4)? *…
A: Standardization:- It is a method used to determine the exact concentration of a solution. Some…
Q: 1. How is complete precipitation assured in the Group III Cations? 2. In the confirmatory test of…
A:
Q: If a sample of silver coin weighing 0.2500 g gives a precipitate of AgCl weighing 0.2991 g, What wt…
A: The given data contains, weight of silver coin = 0.2500 g. weight of AgCl= 0.2991 g.
Q: Calculate the (Ka) value for the reaction of CH3COOH with NHạ that the pH of the solution is (6.46)…
A: The Ka for the reaction of acetic acid (CH3COOH) is calculated as shown below.…
Q: A pink solid has the formula CoCl3 5NH3 H2O. A solution of this salt is also pink and rapidly…
A: A solution n of pink solid gives 3 mol of AgCl on titration with silver nitrate, the chloride ion is…
Q: The level of dissolved oxygen in a water sample can be determined by the Winkler method. In a…
A:
Q: A 0.2386-g sample contained only NaCI and KBr. It was dissolved in water and required 48.40 mL of…
A: Given data, Mass = 0.2386 g 48.40 mL of 0.04837M AgNO3 for complete titration Calculating the weight…
Q: Q1/ What weight of pyrite ore (impure FeS2) must be taken for analysis so that the BaSO, precipitate…
A:
Q: What will be the solubility of Fe(OH)3 (Ksp = 1.6 × 10–39) in: a. 0.0250 M FeCl3 solution? b. a…
A: a) Given: Ksp = 1.6 × 10-39 And concentration of FeCl3 = 0.0250 M Since FeCl3 is a completely…
Q: To find the percentage of Na2CO3 in the (Nacl + Na2CO3) mixture in a laboratory experiment…
A: Introduction: The reaction of sodium carbonate with hydrochloride acid has proceeded as given below.…
Q: 6. The phosphorus content in a 0.3004-g sample was precipitated as (NH4);PO4 .12M0O3 a slightly…
A: Given: Mass of PbMoO4 precipitate formed = 0.3017 g. And mass of sample used = 0.3004 g. Molar mass…
Q: - A solution was prepared by dissolving 1.68 g of K4Fe(CN)6 in water and diluting exactly to 500 mL.…
A: Since you have asked a question with multiple sub-parts, we will solve first three sub-parts for…
Q: If the molar solubility of PbCrO4 at 25 oC is 5.48e-07 mol/L, what is the Ksp at this temperature?…
A: Given, a). If the molar solubility of PbCrO4 at 25 oC is 5.48e-07 mol/L, what is the Ksp at this…
Q: The solubility of Cr(OH)3 is measured and found to be 1.31x10-6 g/L. Use this information to…
A:
Q: Ksp nu show, by calculation, that Ag2CrO4 should precipitate when 5 mL of 0.0040 M AgNO3 are added…
A: The question is based on the concept of solubility product Principle. it states that a weak…
Q: Formula of a compound 261.0 mg of FeCl,-xH,O crystals were dissolved in a diluted hydrochloric acid…
A: FeCl2.xH2O or Fe2+(aq) is oxidized by KMnO4(aq) to FeCl3 or Fe3+(aq). KMnO4(aq) or MnO4-(aq) itself…
Q: When titrated in neutral solution with 0.05000 N I, a mixture of As203, As2O5, and inert material…
A: Given: Mixture of As2O5 & As2O3 I2 : Concentration = 0.0500 N , Volume =20.10 mL Na2S2O3 :…
Q: The volume of 0.0125 mol/L sodium thiosulfate used for titration is 98.7 ml. What is the amount of…
A: Interpretation- To determine the amount of dissolved O2 in mg/L when the the volume of 0.0125mol/L…
Q: A solution is made by mixing 500.0 mL of 0.02018 M Na, HASO, with 500.0 mL of 0.04078 M NaOH.…
A: Solution: From the given data one thing we have clear that this is the type of acid base reaction.…
Q: A 20 mL volume of 0.015 M KIO3 containing an excess of KI, is added to a 0.312 g sample of a Real…
A: Given data : A titration between 20 ml volume of 0.015 M KIO3 contains excess iodide with 0.312 g of…
Q: A 5.70 g iron ore was dissolved in concentrated HCl. After the dissolution, the resulting solution…
A:
If 0.3074 g of a mixture of pure KCl and KBr requires 30.98 mL of 0.1007 M AgNO3 solution for its titration, calculate the% KCl and KBr in the sample. (Pat Data: Cl, 35.453; Br, 79.904; K, 39.098)
Step by step
Solved in 2 steps with 1 images
- The mass of K3PO4 needed to prepare 250.0mL of an aqueous solution in which PO4-3 concentration is 0.0550M. The answer is ……………………… How many grams of silver sample is equal to 0.0417 mole of silver The answer is ……………………… When 38.0 mL of 0.1250 M H2SO4 is added to 100 mL of a solution of PbI2, a precipitate of PbSO4 forms. The PbSO4 is then filtered from the solution, dried, and weighed. If the recovered PbSO4 is found to have a mass of 0.0471g, what was the concentration of iodide ions in the original solution The answer is ……………………………… Express 96.342 m using 2 significant figures The answer is ………………………………. The oxidation number of sulfur in (Na2S2O5) is? The answer is ………………………………A solution was prepared by dissolving 1210 mg of K3Fe(CN)6 (329.2 g/mol) in sufficient water to give 785 mL. Calculate b) the weight/volume percentage of K3Fe(CN)6, the number of millimoles of K+ in 35.0 mL of this solution, and the ppm of Fe(CN)63-A mixture containing only KCl and NaBr is analyzed by the Mohr method. A 0.3172-g sample is dissolved in 50 mL of water and titrated to the Ag,CrO4 end point, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same end point. Report the %w/w KCl and NaBr in the sample.
- A mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is dissolved in 50 mL water and titrated to the Ag2CrO4 endpoint, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same endpoint. Report the % (w/w) KCl and NaBr in the sample. [Answer should be 82.41 % (w /w)](a) Explain why Mg(OH)2 precipitates when CO32- ion isadded to a solution containing Mg2+. (b) Will Mg(OH)2precipitate when 4.0 g of Na2CO3 is added to 1.00 L of asolution containing 125 ppm of Mg2+?A 20 mL volume of 0.015 M KIO3 containing an excess of KI, is added to a 0.312 g sample of a Real Lemon solution containing vitamin C. The Yellow-brown solution, caused by excess I2 is titrated to a colorless starch endpoint with 11.3 mL pf 0.106M Na2S2O3. Question: How many moles of I2 reacted with vitamin C in the Real Lemon sample?
- A mixture containing only KCl and NaBr is analyzed by the Mohr method. A 0.5072-g sample is dissolved in 50 mL of water and titrated to the Ag2CrO4 end point, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same end point. Report the %w/w KCl and NaBr in the sample.KCl = 74.551 NaBr = 102.89(a) If the molar solubility of Cu3(PO4)2 at 25 oC is 1.67e-08 mol/L, what is the Ksp at this temperature?Ksp = _______(b) It is found that 1.75e-06 g of Cu3(AsO4)2 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Cu3(AsO4)2.Ksp = _______(c) The Ksp of ScF3 at 25 oC is 5.81e-24. What is the molar solubility of ScF3?solubility = ______ mol/LIf a sample of silver coin weighing 0.2500 g gives a precipitate of AgCl weighing 0.2991 g, What wt of AgI could have been obtained from the same wt of sample?
- A 0.7336-g sample of an alloy that contains copper and zinc is dissolved in 8 M HCl and diluted to 100 mL in a volumetric flask. In one analysis, the zinc (At. Mass = 65.38 g/mol) in a 25.00-mL portion of the solution is precipitated as ZnNH4PO4, and isolated as Zn2P2O7 (FM = 304.70g/mol), yielding 0.1163 g. The copper (At. Mass = 63.55 g/mol) in a separate 25.00-mL portion of the solution is treated to precipitate CuSCN (121.63 g/mol), yielding 0.2383 g. Calculate the %w/w Zn and the %w/w Cu in the sample.Zhongli is a speleologist tasked to analyze the CaCO₃ content of a limestone stalactite. A 5.0000-g sample was dissolved in 25.00 mL of 1.350 M HCl, it was then heated to expel any CO₂ formed. The excess HCl was titrated to a phenolphthalein end point, it used 37.50 mL of 0.1200 M NaOH. A. How many moles of HCl was added initially to digest the limestone sample? B. How many moles of CaCO₃ is present in the limestone sample? C. What is the purity of the limestone in terms of %w/w CaCO₃?Solve the following problem: Zinc in a 0.7457 g sample of foot powder was titrated with 22.57 mL of 0.01639 M EDTA. Calculate the percentage of Zinc in this sample.