2.00 g of limestone was dissolved in hydrochloric acid and all the calcium present in the sample was converted to Ca2+. Excess ammonium oxalate solution, (NH4)2C2O4, was added to the solution to precipitate the calcium ions as calcium oxalate, CaC2O4.The precipitate was weighed to a constant mass of 2.43 g. Calculate the percentage by mass of calcium in the limestone.

Q: The following analytical procedures were used for the determination of chlorate (ClO3). 10.00 mL of…

A: The volume of chlorate solution A= 10.00 mL = 0.010 L The volume of 0.100 M AgNO3 added =  70.00 mL…

Q: 164.00 mL of 0.200 M Cu(NO3)2(aq) is mixed with 93.000 mL of 0.400 M NaOH(aq). Assuming 100% yield,…

A: The chemical reaction is: Cu(NO3)2 (aq) + 2NaOH (aq) →Cu(OH)2 (s) + 2NaNO3 (aq)

Q: In the reaction between KCl(aq) and AgNO3(aq), a precipitate of AgCl(s) will form. What mass (in…

A: Molarity of AgNO3 solution = 0.220 Volume of AgNO3 solution = 27.2*10-3 Molar mass of KCl= 74.55…

Q: The Burke Museum at the UW is analyzing a dinosaur bone sample for the amount of calcium it…

A: The solid

Q: The concentration of a certain sodium hydroxide solution was determined by using the solution to…

A: Given  Mass of KHP = 0.4790 gram  Molar mass of KHP = 204.22 gram/mole  Volume of NaOH solution =…

Q: A 2.00g sample of limestone was dissolved in hydrochloric acid and all the calcium present in the…

A: Ca2+ + C2O42- ----CaC2O4

Q: A solution contains one or more of the following ions: Ag+, Ca²+, and Co²+. Lithium bromide is added…

A: Given the solution doesn't form any precipitate with the bromide ion(Br-), but forms a precipitate…

Q: Silver ions can be precipitated from aqueous solutions by the addition of aqueous chloride:…

A:

Q: 170.00 mL of 0.500 M BaCl2(aq) is mixed with 60.000 mL of 0.500 M Li3PO4(aq). Assuming 100% yield,…

A: The overall reaction will be :   3 BaCl2(aq) + 2 Li3PO4(aq) = Ba3(PO4)2(s) + 6 LiCl(aq)…

Q: A solution contains one or more of the following ions: Ag+, Ca2+, and Co2+. Lithium bromide is added…

A: The reactions in which two solutions of soluble salts combine together to form an insoluble salt…

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further…

A:

Q: The solubility product of a sparingly soluble salt, XF2, was determined by titration and found to be…

A: Given that: solubility product of XF2 = 2.9×10-10 M volume of  XF2 = 25.00 mL molarity of HCl =…

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq) , until no…

A:

Q: The calcium in a 200 ml sample of water was determined by precipitating the cation as CaC204. The…

A: Given: Volume of sample of calcium = 200 mL Mass of empty crucible = 26.6002 g And mass of crucible…

Q: What mass of NaOH is needed to precipitate the Cd2+ ions from 33.0 mL of 0.460 M Cd(NO3)2 solution?

A: Volume of solution = 33mLMolarity of solution = 0.460 MMass of NaOH to precipitate Cd = ?

Q: A solution of potassium permanganate was titrated by adding 28.75 mL of the solution to a solution…

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

Q: A student was given a 3.708-g sample of a mixture of potassium nitrate and potassium bromide and was…

A: Given ; Mass of sample = 3.708 g Mass of AgBr precipitate formed = 2.957 g And the sample contains…

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: The concentration of a certain sodium hydroxide solution was determined by using the solution to…

A: From the formula of molarity and reaction between given compounds we can determine the Molarity of…

Q: The calcium in a 200.0 mL sample of natural water was determined by precipitating the cation as…

A: The mass of empty crucible is = 26.6002 g The mass of crucible and CaO is = 26.7134 g The mass of…

Q: Iron(II) can be oxidized to iron(III) by dichromate ion, which is reduced to chromium(III) in acid…

A: SOLUTION: Step 1: The most common ores of iron are hematite (Fe2O3) and magnetite (Fe3O4) and they…

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further…

A:

Q: A barium mineral was dissolved in HCl to give a solution of BaCl 2. An excess of potassium sulfate…

A: Given: Volume of BaCl2 solution = 75.00 mL = 0.075 L                                (Since 1 L =…

Q: A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 2.750-g sample of…

A: To find the mass of FeSO4·7H2O in the 2.750 g sample, we'll need to follow these steps:Calculate the…

Q: a student is given 50.0 mL of a solution of Na2CO3 of unknown concentration.   to determine the…

A: Answer:- This question is answered by using the simple concept of writing the net ionc equation anf…

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further…

A:

Q: The concentration of a certain sodium hydroxide solution was determined by using the solution to…

A: Given: Volume of NaOH neutralized = 48.82 mL = 0.04882 L                           (Since 1 L = 1000…

Q: The concentration of SO42– ions in a 60.0 mL sample of seawater is determined by adding a solution…

A: Volume of sea water sample is 60 mL Mass of BaSO4 is 0.448 g Concentration of sulfate in mmol/L =?

Q: The concentration of a certain sodium hydroxide solution was determined by using the solution to…

A:

Q: Calculate the total mass, in grams, of precipitate produced when 10.0 mL of 2.50 M SrS (aq) reacts…

A: The reaction of SrS with ZnSO4 is ZnSO4+SrS→ZnS+SrSO4

Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: The concentration of a certain sodium hydroxide solution was determined by using the solution to…

A: Given,  Molar mass of KHP = 204.22 g/mol Mass of KHP used = 0.7570 g Now,  Moles of KHP =  mass /…

Q: A solution contains one or more of the following ions: Ag+, Ca2+, and Co2+. Lithium bromide is added…

A: Given information, The solution contain three different kind of ions. On addition of lithium…

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.