The molar mass of a metal carbonate can be determined by adding an excess of HCl to completely react with the carbonate and then “back –titrating” the excess acid with NaOH. If 20.0 mL of 0.0800 M HCl was added to a 0.1022 g sample of MCO3, the excess HCl required 5.64 mL of 0.1000 M NaOH for neutralization. Find the molar mass of MCO3 and identify M.

Q: A titration is set up so that NaOH is in a buret and 25.0 mL of HBr soln is in a flask. TheNaOH has…

A: Given, molarity of NaOH MNaOH =0.250 Mvolume of NaOH solution VNaOH =36.3 mLvolume of HBr solution…

Q: Solid ammonium sulfide is slowly added to 175 mL of a 0.0484 M nickel(II) nitrate solution. The…

A: We need to find the concentration of sulfide ion required to just initiate precipitation. The…

Q: A 25.00 mL volume of 1.637 M sulfuric acid is titrated with potassium hydroxide. At the equivalence…

A: Molarity = Moles of solute/Volume of Solution(in L) Moles of Solute = Molarity x Volume of…

Q: 30 mL of an unknown concentration of phosphoric acid (triprotic) was titrated with 10 mL 0.05 M…

A: We have to predict the concentration of the acid

Q: An analytical chemist weighs out 0.047 g of an unknown monoprotic acid into a 250 mL volumetric…

A: We have to calculate the molar mass of the unknown acid.

Q: 9. In a titration of H2SO4 with NaOH, 57.35 mL of 0.0200 M NaOH was needed to neutralize 15.00 ml of…

A: Since we know that when Strong acid react with stronger base it will forms salt and water and the…

Q: An unknown solid acid with a molar mass of 146.28 g/mol was titrated with 24.10 mL of 1.101 M NaOH.…

A:

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: 0.644 g of wood bleach, which contains oxalic acid, H2C2O4, was placed in an Erlenmeyer flask.  The…

A: The molar mass is the sum of the mass of each element. The molar mass of hydrogen, carbon, and…

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: You are preparing standard acid and base solutions for the laboratory, using potassium hydrogen…

A: Here we are using KHP (1.55 g) to standardize NaOH solution.  After standardization of NaOH…

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: A 0.0892 M solution of sodium hydroxide was used during a titration to determine the concentration…

A: Given, Molarity of NaOH , M1 = 0.0892 M Volume of NaOH , V1  = 22.50 mL  Volume of HNO3 , V2 = 15.00…

Q: 9. You have 0.6395 g of an unknown monoprotic acid, HA, which reacts with NaOH according to the…

A: Given balanced equation: HA + NaOH → NaA + H2O The mass of the unknown monoprotic acid, HA = 0.6395…

Q: An unknown amount of acid can often be determined by adding an excess of base and then…

A: The number of protons obtained from the mixture are,

Q: An impure sample of potassium hydrogen phthalate (KHP) was titrated to determine the percent…

A: We will use stoichiometry of the reaction to get the answer.

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: 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: You dissolve a 0.553 g sample of an unknown monoprotic weak acid in water to a total volume of 20.0…

A: At equivalence point models of acid are equal to moles of base . So first we would calculate models…

Q: Consider the titration of 100.0 mL of an unknown concentration of weak monoprotic acid with 0.550 M…

A: The volume of unknown weak monoprotic acid, V1 = 100.0 mLThe concentration of weak monoprotic acid,…

Q: Malonic acid, H2C3H2O4 (aq), is a diprotic acid, so 2 moles of hydroxide ions are required per mole…

A: A neutralization reaction can be described as a chemical reaction in which acid and base react…

Q: 4. 25.00 mL a phosphoric acid solution is titrated with 0.250 M Sr(OH)2 solution. If it takes 32.00…

A:

Q: You have been provided with a 2.13 x 10-2 L  sample of lithium hydroxide (LiOH) of unknown…

A:

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: with a titration, it took 62.2 ml of 0.626 M strontium hydroxide to neutralize 38.16 ml of percholic…

A: Solution -

Q: 3) A company needs to verify the amount of nitrogen in their new "QuikGreen" fertilizer product. To…

A: Moles HCl = 0.989 M x .05 L = 0.05 moles Moles of NaOH = 0.250 M x (11.74 /1000) L = 0.003 Moles…

Q: Suppose that a 10-mLmL sample of a solution is to be tested for Cl−Cl− ion by addition of 1 drop…

A:

Q: A student place 5 mL of a hydrochloric acid solution in an Erlenmeyer flask. She then added 23.5 mL…

A: Given that 5 m L of HCl solution is placed in flask and 23.5 m L deionised water is added and is…

Q: in a titration to determine the concentration of hydronium ions in a test solution, the test…

A: Given: In a titration to determine the concentration of hydronium ions in a test solution: The test…

Q: A 0.261 g sample of NaHC2O4 (one acidic proton) required 17.5 mL of sodium hydroxide solution for…

A: A chemical reaction between NaHC2O4 and NaOH can be written in the form of an equation as shown…

Q: lan would on of HCI to titrate 25.00 mL the unknown Ca(OH)2 solution. Calculate the molarity of the…

A: We will calculate molarity of Ca(OH)2

Q: You titrated a 25.00 mL solution of 0.0800 M oxalic acid with a freshly prepared solution of KMnO4.…

A: The expression to calculate the unknown values from the known values is given by, M1V1=M2V2 where M…

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

A: Chemical equation for the titration of oxalic acid with NaOH is: H2C2O4+2NaOH →Na2C2O4+2H2O This…

Q: Titration is a common laboratory method of quantitative chemical analysis. In an acid- base…

A:

Q: If the concentration of the NaOH that was added was 1.0 M and the volume of oxalic acid being…

A: For NaOH, Molarity, M1 = 1.0 M = 1 mol L-1 Volume used, V1 = 29 mL = 29 x 10-3 L…

Q: A solution contains Cr3+ and Mg2+. The addition of 1.00 L of 1.53 M NaF solution is required to…

A: Number of moles of NaF can be determined and assuming that x mole of Cr+3 and y moles of Mg+2 are in…

Q: 185 mL of 0.355 M NaCl is added to a 0.500 L volumetric flask and the flask is filled with water.…

A: When a solution of molarity M1 and volume V1 is diluted by adding water to a solution of molarity M2…

Q: What is the pH of the buffer 0.10 M Na2HPO4/0.15 M KH2PO4? pka1 = 2.12,pka2 = 7.21,pka3 = 12.32

A: Given: [Na2HPO4] = 0.10 M [KH2PO4] = 0.15 M pKa1 = 2.12  pKa2 = 7.21  pKa3 = 12.32

Q: When 50.0 mL of a 0.3000 M AgNO3 solution is added to (4.65x10^1) mL of a solution of MgCl₂, an AgCl…

A:

Q: A student conducting this experiment measures out 0.913 g of an unknown monoprotic weak acid and…

A: Given: The mass of the weak monoprotic acid taken = 0.913 g The volume of the acid solution = 110 mL…