The calcium in a 200 mL sample of water sample was determined by precipitating the cation as CaC2O4. The precipitate was filtered, washed and ignited in a crucible with an empty mass of 26.6002 g. The mass of the crucible plus CaO (56.077 g/mol) was 26.7134 g. Calculate the Molarity of Ca. O a. 0.005 M O b. 0.040 M O c. 0.100 M O d. 0.080 M O e. 0.010 M

Q: How many moles of Cl- ions must be added to precipitate all of the silver ions present in 50.0 mL of…

A: 1 mol of Ci react with 1 mol Agno3 to produce 1 mol of Agci (Precipate ) means No of mols of Ci…

Q: 8) Suppose that a solution of sulfuric acid (H2SO4) is titrated with potassium hydroxide. a. Write a…

A: a) Balanced chemical equation :   In this reaction, 1mol of sulfuric acid neutralized by the 2mol…

Q: An antacid tablet with an active ingredient of CaCO3 was dissolved in 50.0 mL of 0.300 M HCl. When…

A: The number of moles of HCl = 50.0 mL1000 mL/L×0.300 mol L-1…

Q: chemist crushes a 4.500g sample of the shell to a fine powder and titrates it to the endpoint with…

A: The amount of sample crushed= 4.500g Volume of HCl = 172.mL Molarity of HCl =0.380M  The balanced…

Q: 7. A sample contains an unknown amount of succinic acid, H₂C4H4O4. If 0.3902 g of the sample…

A:

Q: 8. When 38.0 mL of 0.1250 M H2S04 is added to 100 mL of a solution of Pbl2, a precipitate of PbSO4…

A: Given data ;  Volume of H2SO4= 38.0 ml  Concentration of H2SO4= 0.1250 M  Mass of PbSO4= 0.0471 g…

Q: A titration flask contains 0.00405 moles of an acetic acid sample   a. Determine the moles of the…

A: The given number of moles of acetic acid is 0.00405 mol. The molarity of NaOH is 0.200 M. The…

Q: a.) determine the volume (in mL) of 14.6 M phosphoric acid required to prepare 100 mL of 0.650 M…

A: a) The volume of 14.6 M phosphoric acid required to prepare 100 mL 0f 0.650 M phosphoric acid we…

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: 30.00 mL of nitric acid (HNO3) with an unknowne concentration was placed into an erlenmeyer fask,…

A: Acid base neutralization reaction involves formation of salt and water. Moles of base reacts with…

Q: 100.0 mL of 0.60 M aqueous Pb(NO3)2 is mixed with excess aqueous Kl. What is the chemical formula of…

A: Given :-  Molar concentration of Pb(NO3)2 solution = 0.60 M  Volume of Pb(NO3)2 solution = 100.0 mL…

Q: A 25.00 mL sam ple of boric acid requires 32.57 mL of 0.2514 M NaOH to reach the endpoint of…

A: Molarity (M): It is defined as number of moles of solute per litre of the solution. Its unit is…

Q: A 25.00 mL sample of phosphoric acid (H3PO4) is titrated to the equivalence using 19.71 mL of 0.2056…

A: Answer: In acid-base reaction, neutralization takes place where hydrogen ions and hydroxide ions…

Q: 3. A solution of acetic acid, HC₂H₂O₂, a monoprotic acid, was standardized by titration with 0.1090…

A:

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: The percentage of NaHCO3 (molar mass = 84.01 g) in a powder used for an upset stomach is found by…

A:

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:

Q: KOH (concentration = 0.2205 M) is used in a titration to determine the amount of acetic acid…

A: Given :  Initial volume of vinegar sample = 50 ml  Volume of vinegar sample after dilution = 500 ml…

Q: O CHEMICAL REACTIONS Determining the volume of base needed to titrate a given mass... A chemistry…

A:

Q: What was the molarity of the KOH solution

A: Molarity = number of moles/volume of solution (in L)   Number of moles = molarity x volume

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: A student determines the concentration of a NaOH solution by titration.   To do so, she titrates…

A: Given: The volume of CH3COOH = 20.00 mL The concentration of CH3COOH = 0.868 M The volume of NaOH…

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: A solution was prepared by mixing 20.00 mL of 0.100 M HNO3 and 120.00 mL of 0.200M HNO3. Calculate…

A: Hello. Since your question has multiple questions, we will solve the first question for you. If you…

Q: A 185.0 mL sample of 1.200 M Pb(NO₃)₂ is mixed with 119.50 mL of 1.500 M NaCl, and the PbCl₂…

A: The balanced Chemical Reaction for less Nitrate and sodium chloride is - Pb(NO₃)₂  + 2NaCl ---->…

Q: A solution contains Ag+ and Hg2+ ions. The addition of 0.100 L of 1.43 M Nal solution is just enough…

A: Mole =Molarity × Volume(L)  Total mole of NaI is responsible for the formation of precipitate. 2mole…

Q: 11) A student finds a bottle labeled "0.02803 M Acid X" and decides to perform a titration using a…

A: Acid-base titration is an analytical technique utilized to determine the unknown concentration of an…

Q: 20. For the reaction 4FeCl2(aq) + 302(g) →2Fe2O3(s) + 4Cl2(g), what volume of a solution of FeCl2 is…

A: In the given question->Number of molecules of O2 = 8.12 × 1021 moleculeMolarity of FeCl2 = 0.620…

Q: A 0.6136 g sample of a monoprotic acid was dissolved in 20 mL of water. The acid solution was…

A: Answer:- This question is answered by using the simple concept of chemical reactions of acids and…

Q: The concentration of SO42– ions in a 45.0 mL sample of seawater is determined by adding a solution…

A: Given information: Mass of barium sulfate = 0.315 g Volume of sample = 45.0 mL or 0.045 L

Q: If 150.0 mL of 2.5 mol/L Na2SO4 is mixed with 125 mL of 0.26 mol/L AgNO3, determine the…

A: A question based on mole concept that is to be accomplished.

Q: A solution contains Ag+ and Hg2+ ions. The addition of 0.100 L of 1.10M NaI solution is just enough…

A: Given -> Volume of NaI = 0.100 L  Molarity of NaI = 1.10 M  Weight of total precipitate= 25.5 gm…

Q: You titrated a 21.00 mL solution of 0.0500 M oxalic acid with a freshly prepared solution of KMnO4.…

A: Given, Volume of oxalic acid = 21.00mL. Molarity of oxalic acid = 0.0500M. Volume of KMnO4 solution…

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: Concentration of Pb(NO3)2 = 1.200 MVolume of sample of Pb(NO3)2 = 185 mLConcentration of NaCl =…

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for