Limestone consists mainly of the mineral calcite, CaCO3. The carbonate content of a 0.5972 g sample of powdered limestone was measured by suspending the powder in water, adding 25.00 mL of 0.508 molar hydrochloric acid, and heating to dissolve the solid and dispel carbon dioxide gas. The excess acid required 36.29 mL of 0.1064 molar sodium hydroxide for complete titration to a phenolphthalein end point. What is the weight percent of calcite in the limestone?

Q: A sample consisting of Na2CO3, NaOH and inert matter weighs 1.179 grams. It is titrated with 0.3 N…

A:

Q: One way in which the useful metal copper is produced is by dissolving the mineral azurite, which…

A: Concentration of Copper sulfate solution = mass of Copper sulfate/ Volume of solution

Q: A chemistry student weighs out 0.186 g of sulfurous acid (H, SO,), a diprotic acid, into a 250. mL…

A:

Q: 2) A 50.0 mL sample of phosphoric acid, H,PO₁, is titrated with 42.50 mL of 0.250 M NaOH. What is…

A: Since you have asked multiple questions, we will solve the first one for you. Kindly repost the…

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 flask contains 10.0 mL10.0 mL of HClHCl and a few drops of phenolphthalein indicator. The buret…

A: Given, The Volume of HCl = 10.0 mL. The molarity of HCl = x. The Volume of NaOH = 31.1 mL. The…

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

A: The given data is as follows: The volume of Ca(OH)₂ = 50.0 mL The molarity of HNO₃ = 0.340 M The…

Q: In a titration 36.7 mL of HBr solution is put in a flask with a few drops of phenolphthalein and…

A: given data are - volume of acid = V1 = 36.7 mL  volume of base = V2 =51.4 ml concentration of base =…

Q: A 21.88 mL portion of a 0.379 M solution of hydrochloric acid, a monoprotic acid, is to be titrated…

A: Here we are required to find the volume of KOH required to reach the equivalence point.

Q: The percent nitrogen (N) in a protein sample can be determined by reacting the protein with sulfuric…

A:

Q: 20.0 mL of 0.250 M sodium chloride is added to 25.0 mL of 0.200 M silver (I) perchlorate, what mass…

A: We will first calculate the number of moles of sodium chloride and moles of silver (I) perchlorate.…

Q: Suppose that 0.323 g of an unknown sulfate salt is dissolved in 50 mL of water. The solution is…

A: 1 mole Ba2+ ion react with 1 mole SO42- ion to form 1 mole BaSO4.Precipitation reaction is

Q: A 185.0 mL sample of 1.200 M Pb(NO₃)₂ is mixed with 99.50 mL of 1.500 M NaCl, and the PbCl₂…

A: The balanced chemical equation for the precipitation of lead (II) chloride can be written as:…

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

A: At equvalence Point↓No. of gram equivalent of Acid = No. of gram                   Eqivalent of…

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: A 50.0 mL sample of the hydrochloric acid solution is titrated with 0.250 M potassium hydroxide…

A: We have 50.0 mL sample of the hydrochloric acid solution , titrated with 0.250 M  KOH solution .…

Q: A solution of HCl is prepared by an unknown dilution of concentrated HCl. It is standardized by…

A: #1: Three different samples of the unknown HCl solution are prepared and titrated using Na2CO3(s) as…

Q: A solution contains 0.0140 M Pb2+(aq) and 0.0140 M Sr2+(aq). If you add SO2−4(aq), what will be the…

A: Ion that has lower value KSP , will precipitate first as its ionic product will overcome the KSP…

Q: A student titrates a weak acid with 0.100 M NaOH, adding 31.65 mL before a dark pink color is seen.…

A: The mole of H+ ion the weak acid is equal to the mole of NaOH used in the titration.  The molarity…

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: In a titration, suppose 20.00 mL of 0.275 M oxalic acid solution required 21.72 mL of NaOH solution…

A: H2C2O4(aq) + 2NaOH(aq) -------> Na2C2O4(aq) +2H2O(l)

Q: 25 mL of acetic acid was titrated 0.1 M NaOH. The titration required approximately 20.00 mL of NaOH…

A: Given,molarity of NaOH = 0.1 MVolume of NaOH = 20.00 mLVolume of acetic acid = 25 mL

Q: The magnesium content of a 100 ml sample of mineral water is analyzed. The Mg2+ in the sample…

A: PART-(a)•So finally according to question Mg+2 present as Mg2P2O7. •1 mole of Mg2P2O7  has 2 mole of…

Q: A chemist is performing a titration in order to determine the amount of sodium hydroxide, NaOH(aq),…

A: Answer:Number of moles of any specie in a solution is equal to the product of its molar…

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 35.00 mL volume of formic acid is titrated with 0.1428 M potassium hydroxide (KOH). If 24.39 mL…

A: Given: The concentration of potassium hydroxide (KOH)=0.1428 M The volume of potassium hydroxide…

Q: 2.10 g of an unknown metal bromide (MBr2, where M is the unknown metal) was treated with excess…

A: The reaction between a metal bromide (MBr2) and silver nitrate (AgNO3) results in the formation of…

Q: In a titration 40.0 mL of HCl is put in a flask with a few drops of phenolphthalein. A solution of…

A: Given, Molarity of HCl = 40.0 mL            Molarity of NaOH = 0.200 M            Volume of NaOH=…

Q: Suppose 0.347 grams of a solid monoprotic acid are titrated with 14.82 mL of 0.117 M NaOH.  What is…

A: The monoprotic acid reacts with sodium hydroxide as follows: HA  +  NaOH  →  NaA  +  H2O The…

Q: A tablet contains 0.5 g of magnesium hydroxide as the only basic ingredient . The tablet is analysed…

A:

Q: An HCl solution was titrated using sodium carbonate as the primary standard and methyl red as the…

A: The balanced chemical equation for the reaction between HCl and Na2CO3 is: 2HCl + Na2CO3 → 2NaCl +…

Q: A sample consisting of Na2CO3 and NaHCO3, and inert matter weighs 4.9269 grams. It is titrated with…

A: Na2CO3 + HCl = NaHCO3 + NaCl Only 50% of…

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: 3. A 0.4021-g sample of a purified organic acid was dissolved in water and titrated…

A: Given,Mass of pure organic acid = 0.4021 gVolume of NaOH solution = 18.62 mLConcentration of NaOH…

Q: 12.00 mL of lemon juice containing citric acid is placed into an Erlenmeyer flask to which 2 drops…

A: Given data

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

A: Given : Concentration of HNO3 = 0.340 M Volume of HNO3 solution used = 15.3 mL = 0.0153 L…

Q: It took 24.37 mL of 0.1224 M NaOH to reach the endpoint when titrating a sample containing 0.1650g…

A: Since moles of solute = molarity of solution X volume of solution in L  Since 0.1224 M solution of…

Q: A sample contains BaCl2 plus inert matter. What weight must be taken so that when the solution is…

A: When barium chloride is titrated with silver nitrate, the corresponding chemical equation is:…

Q: A student titrates a weak acid with 0.100 M NaOH, adding 34.84 mL before a dark pink color is seen.…

A: Calculation of no. of mol of NaOH: No. of mol=Molarity×Volume=0.100 mol/L×34.84×10-3 L=3.484 ×10-3…

Q: A researcher is tasked with analyzing pet food samples for total nitrogen by the Kjeldahl method. A…

A: The question is based on the concept of analytical chemistry. we need to calculate mass percentage…

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: An acid-base titration is used to standardize a solution of NaOH. A student adds 25.00 mL of a…

A: KHP + NaOH→NaKP + H2O At equivalence point No. of moles of KHP=No. of moles of NaOH

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: In this assignment, you will determine the mass % of an unknown sample of baking soda (NaHCO3) by…

A: Given: mass of NaHCO3 sample = 1.500 g Concentration of HCl = 0.3015 M Volume of HCl = 43 mL molar…