A 6.221-g sample containing magnesium chloride and sodium chloride was dissolved in sufficient water to give 500 mL of solution. Analysis for the chloride content of a 50.0-mL aliquot resulted in the formation of 0.5923 g of AgCl. The magnesium in a second 50.0-mL aliquot was precipitated as MgN H4 PO4 ; on ignition, 0.1796 g of Mg2P2O7 was found. Calculate the percentage of Mg Cl2 x 6H2O and of NaCl in the sample. a. ________% MgCl2 x 6H2O b. ________% NaCl

Q: MGNH&PO4-6H2O has a solubility in water of 0.023 g/100mL. Suppose a student obtains 0.7193 g of…

A: Solution:- Given the solubility of MgNH4PO4.6H2O is 0.023 g/100 mL  Mass of precipitate = 0.7193 g…

Q: A second analyst was attempting to determine the percent KHP in an unknown sample, similar to that…

A: From the given molarity of NaOH, number of moles of NaOH can be calculated followed by the…

Q: A 25.0 mL solution of 1.00 M CaCl2 is diluted to 250.0 mL. Then, 30.0- mL aliquot of the diluted…

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Q: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of…

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Q: A sample of copper oxide weighing 2.013 g is dissolved in acid, the pH adjusted, and excess KI…

A: The solution of the question is given below:

Q: To determine the amount of magnetite, Fe3O4 in an impure ore, a 1.5419 g sample is dissolved in…

A: The balance chemical equation can be given as below 2Fe3O4 → 3Fe2O3 The formula weight of Fe3O4 =…

Q: You are provided with an unknown solution that contains Group I cations. To 1 mL of this solution…

A: All three of the group I cations(Pb2+, Ag+ and Hg22+) give precipitate on addition of HCl because…

Q: Consider these compounds: A. PBF2 В. Cu(ОН)2 С. Cr(ОН)3 D. Al(OH)3 Complete the following statements…

A: Answer: Magnesium flouride is more soluble than copper, chromium or aluminum hydroxide and less…

Q: When a solution of ammonium sulfate is added to a solution of strontium nitrate, Sr(NO3)2, a white…

A: The balanced molecular equation of  ammonium sulphate with  strontium nitrate is given by

Q: Two flasks filled with NH3(g) and HBr(g) and both balloons were sealed with taps which were…

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Q: 2.5 g sample of impure mercury (II) oxide, in excess of potassium iodide is being resolved. HgO(k)…

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Q: Limestone consists mainly of the mineral calcite, CaCO3.  The carbonate content of 0.5143 g of…

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Q: 1. (10) The amount of protein in a sample of cheese can be determined by Kjeldahl analysis for…

A: Answer:- this question is answered by using the simple concept of stoichiometry which involves the…

Q: To determine the amount of magnetite, Fe3O4, in an impure ore, a 1.5419-g sample is dissolved in…

A:

Q: A 6.586-g sample containing magnesium chloride and sodium chloride was dissolved in sufficient water…

A: Mass of sample = 6.586 g Mass of sample solution = 500 mL Mass of AgCl formed from 50 mL solution =…

Q: All arsenic in the mineral containing 20 g of arsenic is dissolved by converting it into As3+.…

A: Working formula Decinormal = one tenth of normality = 0.1 N Normality = Molarity*no of equivalents…

Q: A 6.881-g sample containing magnesium chloride and sodium chloride was dissolved in sufficient water…

A: Given: mass of MgCl2·6H2O and NaCl sample = 6.881 g. Volume of solution made = 500 mL = 0.500 L…

Q: A student weighs 0.583 g Baclz-2H20 and 0.637 g CuSO:-5H20, and dissolves each in water to a final…

A: Given A reaction between BaCl2.2H2O and CuSO4.5H2O, whose theoretical yield is to be determined.

Q: The aluminum in a 1.200g sample of impure ammonium aluminum sulfate was precipitated with aqueous…

A: Mass of Sample is 1.200 g. Mass of anhydrous Al2O3 is 0.2001 g. Calculation of no. of mol of…

Q: A 1.7483-g sample containing Al(NO:)s, AICI, and inert material was dissolved in acid and divided…

A: Percentage composition of a sample can be calculated using the molar mass of the compounds present…

Q: 10. An ore containing magnetite, Fe304, was analyzed by dissolving a 0.9859-g sample in concentrated…

A: Answer: This question is based on stoichiometric calculation where we have find out the number of…

Q: A 280.5 mg sample containing only Pb3O4and inert matter gives a precipitate of PbSO4 weighing 381.5…

A: Given as The sample contains Pb3O4 as 280.5 mg The precipitate of PbSO4 weighing 381.5 mg The purity…

Q: mL of a bleach (NaOCl) sample is diluted to 500 mL. An excessive amount of KI is added to the 20 mL…

A: The question makes use of iodometric titrations in which  indirectly liberated iodine is titrated…

Q: 2.413 g sample contains Na2CO3, NaHCO3 and inert material. This sample was solved in water and…

A:

Q: the calcium in a 5.00ml serum sample is precipitated as CaC2O4 with ammonium oxalate. the filtered…

A: Number of moles of KMnO4 , n = Molarity x volume in L                                              =…

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

A:

Q: A sample of solid Eu(OH)3 was stirred in water at a certain temperature until the solution contained…

A: The concentration of hydroxide ion (OH-) in the solution is determined as follows.…

Q: Calcium oxalate is a sparingly soluble ionic compound composed of calcium ions (Ca2+) and oxalate…

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Q: 1. A 0.4126-g sample of primary-standard Na2CO3 was treated with 40.00 mL of dilute perchloric acid.…

A: Given:-           Mole of  Na2CO3 = 0.4126 g/106 gmol = 3.89 mmol Mole of HClO4 neutralize required…

Q: The amount of protein in a sample of cheese is determined by a Kjeldahl analysis for nitrogen. After…

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Q: 2.413 g sample contains Na2CO3, NaHCO3 and inert material. This sample was solved in water and…

A: When a solution mixture of Na2CO3 and NaHCO3 are titrated against HCl solution using…

Q: In the laboratory you are given the task of separating Ag* and Fe2+ ions in aqueous solution. For…

A: Answer-1 No, by the use of K2CO3 it is not possible to separate silver ion and ferrous ion because…

Q: The presence of soluble chromium compounds in wastewater is of great environmental concern. As part…

A: We will calculate concentration of Cr+3

Q: The SO2 present in air is mainly responsible for acid rain. Its concentration can bé determined by…

A: Molarity of the solution is equal to the number of moles of solute present in one liter of the…

Q: When a 8.000g of mineral ore sample containing Sn(CO3)2 (238.7 g/mol) and other inert material was…

A: the given data is  weight of the sample is 8.000g The weight of CaCO3 formed is 0.7800g

Q: It is known that when mixed in solution aqueous, silver ions will react with chloride ions to form…

A: The balance chemical equation for a reaction when AgNO3 and KNO3 are mixed with concentrated KCl…

Q: Write the balanced NET ionic equation for the reaction when aqueous NiCl₂ and aqueous Na₂S are mixed…

A: A chemical reaction in which the number of atoms present on the left hand side of the equation is…

Q: Many chemical compounds contain impurities. Crude potassium carbonate (K2CO3) obtained from the…

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Q: NEUTRALIZATION From the previous lesson, you have learned that the Arrhenius theory defines…

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Q: The solubility product (Ksp) for 4 Pb(OH)2 (s) is 2.5 x 10-16. What would be the quantity of…

A: Given : Ksp = 2.5 x 10-16 M.wt = 241.2 g/mole

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

A:

Q: A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs…

A: Molarity of NaOH solution = 0.0840 M                                             = 8.40 x 10-2 M…

Q: lodide (atomic mass 126.9 g/mol) in water was determined by the Volhard method. A 20.00 mL aliquot…

A:

Q: 1. What mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained…

A: Hi, we are supposed to answer one question. To get the remaining questions solved please mention the…

Q: 6. A 6.881-g sample containing magnesium chloride and sodium chloride was dissolved in sufficient…

A:

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

A:

Q: In one experiment, 0.2480 g sample of CaCO3 was dissolved in an acidic solution. The calcium was…

A: Given data,Mass of sample=0.2480gMass of CaC2O4.H2O=0.3084g

Q: 0.6113 g sample of Dow metal, containing aluminum, magnesium, and other metals, was dissolved and…

A: Mass of sample = 0.6113 g Mass of mixture of Al(C9H6NO)3 and Mg(C9H6NO)2 = 7.8154 g Mass of mixture…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.