Mixtures of CaCl₂ and NaCl are used to melt ice on roads.A dissolved 1.9348-g sample of such a mixture was analyzed byusing excess Na₂C₂O₄to precipitate the Ca²⁺ as CaC₂O₄. The CaC₂O₄ was dissolved in sulfuric acid, and the resulting H₂C₂O₄ was titrated with 37.68 mL of 0.1019 MKMnO₄ solution. (a) Write the balanced net ionic equation for the precipitation re-action. (b) Write the balanced net ionic equation for the titration reaction. (c) What is the oxidizing agent? (d) What is the reducing agent? (e) Calculate the masspercent of CaCl₂ in the original sample

Q: Manganese is derived from pyrolusite ore, an impure manganese dioxide. In the procedure used to…

A: Here , Oxalic acid is back titrated with KMnO4 , so concept of back Titration will be used here as…

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

Q: In the preparation of Rochelle salt (MW = 282.83 g/mol), 6.6 grams of monohydrated Sodium carbonate…

A:

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A:

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

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A: The question is based on the concept of quantitative analysis . we have to calculate percentage of…

Q: In the analysis of 0.8972 g of an impure Cl- sample (35.45 g/mol), 1.399 g of AgCl (143.32 g/mol)…

A:

Q: How many grams of Ag,CO3 will precipitate when excess (NH4)½CO3 solution is added to 57.0 mL of…

A: Given  Molarity of AgNO3  =  0.561 M                                  = 0.561 mol/L  Volume = 57  mL…

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 0.51960.5196 g solid sample containing a mixture of LaCl3LaCl3 (molar mass = 245.26 g/mol) and…

A: The reactions of LaCl3 & Ce(NO3)3 with KIO3 are represented as follows: LaCl3 +3 KIO3  →…

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A:

Q: In a biochemical assay, a chemist needs to add 3.81 g of glucose to a reaction mixture. Calculate…

A: Molar mass of Glucose is 180.2 g/mol. Calculation of no. of mol of Glucose:

Q: A dried sample of commercial salt was prepared by a coning and quartering. A 0.837-g sample of the…

A:

Q: A 1.00 g mixture of H2O and D2O was electrolyzed producing H2(g), D2(g) and O2(g).  The H2(g) and…

A: The reactions involved are: Cl2+H2O⇒HOCl + HClCl2+D2O⇒DOCl + DCl

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…

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

Q: 8. When 38.0 mL of 0.1250 M H2SO4 is added to 100 mL of a solution of PbI2, a precipitate of PBSO4…

A: Given:  Volume of H2SO4  solution = 38 ml  Molarity of H2SO4 solution = 0.1250 M  Volume of PbI2…

Q: What volume of 0.416 M mg(no3)2 should be added to 255ml of 0.102M KNO3 to produce a solution with a…

A: Given, Concentration of Mg(NO3)2 = 0.416M. Volume of KNO3 = 255mL. Concentration of KNO3 = 0.102M.…

Q: QUES A certain compound was known to contain calcium and chlorine. A sample that weighed 2.78g was…

A: Mass of sample taken = 2.78 g Mass of CaO formed by decomposition of calcium oxalate = 1.40 g

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

A: Solution - According to the question - Given - Mass of calcium ore = 12.63 g Mass of pure CaCO3 =…

Q: An iron ore was analyzed by dissolving a 2.9912-g sample in concentrated HCI. The resulting solution…

A:

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

A: Theoritically :- 1 mole CaCO3 is giving 1 mole of Ca., n(Ca) = n(CaCO3) Moles of CaCO3 = mass of…

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A: HClO4 is a strong acid, it reacts with magnesium hydroxide Mg(OH)2 , this is an acid base reaction.…

Q: What mass of the precipitate  is produced in the reaction of  15.0 ml of 0.150 M  Na3PO4     and…

A:

Q: Exactly 0.2220 g of pure Na2CO3 was dissolved in 100.0 mL of 0.0731 M HCl.   (a) What mass in grams…

A: First of all we need to find the limiting reagent by considering the balanced reaction. When we…

Q: A 10.00 mL aliquot of vinegar (acetic acid, CH3COOH - 60.08 g/mol) was diluted in a 100.00 mL…

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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 0.879 g sample of a CaCl2·2H2O/K2C2O4·H2O solid salt mixture is dissolved in ~100mL of deionized…

A: Given:Mass of CaCl2.2H2O +mass of K2C2O4·H2O = 0.879 g.Mass of CaC2O4 = 0.284 g.Volume of water =…

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

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Q: 6. A 0.4622-g sample of potassium hyd rogen phthalate was dissolved in 50 mL of deionized water and…

A: The molarity of a solution is the ratio of number of moles of a substance to the volume of solution…

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Q: Fe(I) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the…

A: Consider the given balanced reaction as; Reaction:      4 FeOH+ aq + 4 OH- aq + O2 g + 2 H2O l → 4…

Q: A 2.2004 g of primary standard oxalic acid, H2C2O4 (90.04 g/mol), was dissolved in water to form a…

A:

Q: Question attached

A: The balanced equation for the reaction between KHP and NaOH is: C8H5KO4 + NaOH → C8H4KO4-Na+ + H2O

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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:

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A: Number of moles of BaSO4 formed is calculated,

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A:

Q: A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analyzed by dissolving the sample and…

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Q: McQuarrie • Rock Galloyly A 0.3146 g sample of a mixture of NaCI(s) and KBr(s) was dissolved in…

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A:

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A:

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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.