A precipitate of AgCl + AgBr weighs 0.8132 gram. On heating in a current of chlorine, the AgBr is converted into AgCl, the mixture losing 0.1450 gram in weight. What was the percentage of chlorine in the original precipitate?

Q: A 0.2088 g sample of primary-standard-grade sodium carbonate, Na₂CO₃ (105.99 g/mol) was dissolved in…

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Q: Twenty tablets of an iron food supplement whose total mass was 22.131 g were crushed and perfectly…

A: Answer: This question is based on the relation between mass, molar mass and number of moles and by…

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: The protein content of wheat flour can be determined reasonably accurately by multiplying the…

A: Kjeldahl method is used for protein's quantitative analysis.

Q: Calculate the initial ferric ion concentration, [Fe*]o, in the reaction mixture obtained by…

A: Given: Volume of Fe3+ = 2.00 mL Concentration of Fe3+ = 0.00218 M Volume of SCN- = 500μL = 0.5 mL…

Q: To determine the amount of a hypothetical compound KHA · H2A 2H2O in a pure sample, Senku asked his…

A: The compound KHA.H2A.2H2A has a total of 3 protons(H+). Hence it is a triprotic acid. #(a): Given…

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

A: Given that: solubility product of XF2 = 2.9×10-10 M volume of  XF2 = 25.00 mL molarity of HCl =…

Q: 15 mL of 0.1 M BaCI2(aq) is mixed with 10 mL of 0.1 M AgNO3 (aq). What are the concentrations of the…

A: We know Concentration=Number of molesVolume of solution in liters we will first find the…

Q: if I were to separate Bi3+ and Co2+, can I do that by adding H2S? So that Bi3+ would precipitate?…

A: Bi3+ is the second group basic radical whereas Co2+ belong to the fourth group.  For the sepration…

Q: If 20.0 g of LiOH is added to 0.750 L of 1.00 M Cd(NO₃)₂, how many grams of precipitate will be…

A: The balanced equation for this precipitation reaction is: Cd(NO3)2 + 2LiOH → Cd(OH)2 + 2LiNO3 The…

Q: Suppose that a lake was contaminated with nitric acid (HNO3), and another chemical was needed to…

A: Given that : Suppose that a lake was contaminated with nitric acid (HNO3), and another chemical was…

Q: A Ba(OH)2 solution is standardized against potassium hydrogen phthalate (KHP). The titration of…

A: Given: Mass of KHP used = 0.5781 g. Volume of Ba(OH)2 required = 30.50 mL = 0.03050 L…

Q: A sample containing NaCl, NaBr, and inert materials weighs 1.000 g. With excess AgNO3 it gives a…

A: Given that: Mass of  NaCl+ NaBr = 1.000 g Mass of precipitate = 0.5260 g AgBr is converted to AgCl,…

Q: When 38.0 mL of 0.1250 M H2SO4 is added to 100. mL of a solution of PbBr2, a precipitate of PbSO4…

A: Mass of PbSO4 = 0.0471 g Molar mass of PbSO4 =303.28 g/mol Volume of PbBr2 = 100 mL

Q: The lead in a 0.2000-g sample is precipitated as PbCrO4. The precipitate is filtered, washed, and…

A: The balanced equations are Pb2+ + 2 CrO42– --------> PbCrO4 (s) 2 PbCrO4 + 2 H+ -------> 2…

Q: A student weighs out 1.051 g of impure KHP, dissolves the sample in deionized water and titrates it…

A: Given data Mass of impure KHP = 1.051 g Molarity of NaOH  solution = 0.1101 M Volume of NaOH…

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

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Q: 6.) One way to determine the amount of nitrogen in a sample is through a method called Kjeldahl…

A: HCl is monobasic acid and NaOH is monoacidic base Therefore, for neutralization, moles of NaOH used…

Q: The calcium in a 200.0 mL sample of natural water was determined by precipitating the cation as…

A: The mass of empty crucible is = 26.6002 g The mass of crucible and CaO is = 26.7134 g The mass of…

Q: 1. (a) The solubility product of a sparingly soluble salt, XF2, was determined by titration and…

A: General titration equation is  M1V1=M2V2  M-> MolarityV->Volume in this question the titre is…

Q: A titration of a 0.7879g sample potassium hydrogen phthalate, KHP (GFW= 204.23g/mole), required…

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Q: What volume of 0,955 mol·dm–3 HCl solution (in mL or cm3), is required to titrate 2,152 g of Na2CO3…

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Q: When in danger, bombardier beetles can fire a hot, toxic mixture of chemicals at their attacker.…

A: Hess's law is defined as the law which states that the total amount of heat absorbed or released for…

Q: In an analytical laboratory that analyzes BOD, the titrant solution of sodium thiosulphate the help…

A: The balanced reactions involved are as below: 6KI + 14 HCl + K2Cr2O7 -----> 2CrCl3 + 3I2 + 7H2O +…

Q: A 3.00 mL bleach (NaOCI is the active ingredient) sample is mixed with potassium iodide and acid to…

A: The overall reaction taking place during this titration is- ClO- +2S2O32- +2H+→Cl- +S4O62- + H2O…

Q: The amount of protein in a sample of cheese was determined by a Kjeldahl analysis. After digesting a…

A: Given , Mass of sample cheese = 0.9814 g

Q: The following chemical reaction takes place in aqueous solution: 2 AgF(aq)+ (NH S(aq)Ag,S(s)+2 NH…

A: The net ionic equation is a chemical equation in which only species are mentioned which participate…

Q: The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an…

A: In the question we have, The mass of the Stibnite sample is given by = 6.19 g The volume of the…

Q: In a titration of KOH, 0.0725 g of KHP is weighed into a flask and dissolved in deionized water. The…

A: Molar mass of KHP is 204.22 g/mol. Calculation of no. of mol of KHP: Since KHP is a monoprotic…

Q: (b) An impure sample of (COOH)2.2H2O that had a mass of 1.00 g was dissolved in water and titrated…

A: Whenver an acid and base reacts with each other than they form salt and water and the process is…

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 25.00 mL aliquot is withdrawn from the liquid portion of saturated Manganese (II) hydroxide and…

A: Given : 25 mL of saturated manganese (II) hydroxide  Concentration of HCl used = 0.0045 M And volume…