The exact concentration of a Na2S2O3 standard solution was determined by using KIO3 stock solution. 0.2189 g of KIO3 (potassium iodate Mr = 214.00 g/mol) were diluted to 200 cm3. 25 cm3 samples were titrated (after addition of acid and KI, proper amount in excess). The average of the consumption was 15.47 cm3. What is the concentration of Na2S2O3 standard solution and the KIO3 solution?

Q: You are asked to determine the percentage of the components of a mixture containing sodium iodide,…

A: Given that a mixture of sodium iodide, NaI, magnesium hydroxide, Mg(OH)2, and barium sulfate, BaSO4.…

Q: The phosphorus in a 0.2222-g sample was precipitated as the slightly soluble (NH4)3PO4 • 12Mo O3.…

A: P2O5 = 2 (NH4)3PO4 • 12Mo O3 = 24 PbMoO4   Moles of PbMoO4 are, Moles = mass ÷ molar mass Moles =…

Q: Sodium formate reacts with permanganate in neutral solution according to the equation CHO2 + MnO4 +…

A:

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

A: The solid

Q: The arsenic in a 1.209-g sample of a pesticide was converted to H3 AsO4 by suitable treatment. The…

A: Here we are required to find the percentage of arsenic oxide in sample.

Q: A solution of 25 mL Na2CO3 is neutralized with 22.4 mL of 0.1065 M HCl. In the another analysis, 50…

A: Given that, Volume of 0.1065 M HCl = 22.4 mL  = 0.0224 L Moles of HCl in 0.0224 L = 0.1065 M×0.0224…

Q: You have 2.50 L of an acetic acid stock solution with unknown concentration.  You first dilute…

A: Let the concentration of the unknown acetic acid stock solution be “C1” M or mol/L.   Given, You…

Q: Mixtures of CaCl₂ and NaCl are used to melt ice on roads.A dissolved 1.9348-g sample of such a…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: 100.0 mL of an aqueous solution containing 0.250 M KOH(aq) is mixed with 100.0 mL of an aqueous…

A: First of all, we need to write down the balanced chemical.  The molar mass of Fe(OH)3 = 106.87g/mol

Q: mg of OXallo acid (H,C,04), a diprotic acid that can be purchased inexpensively in high purity, and…

A:

Q: A small iron pan was analyzed by dissolving a 11.1321 g sample in HCl. The resulting solution was…

A: Given, mass of Fe3O4 = 5.1231 g molar mass of Fe3O4 = 231.533 g/mol !! Calculate the moles of Fe3O4…

Q: A stock solution of potassium permanganate (KMNO4) was prepared by dissolving 10.0 g KMNO4 with DI…

A: To solve this problem we will first calculate the number of moles of KMnO4   Then Molarity will be…

Q: 2. The arsenic in a 1.203-g sample of a pesticide was converted to H3ASO4 by suitable treatment. The…

A: Given that,Weight of pesticide = 1.203gVolume of  = 40 mLMolarity of = 0.05871 MVolume of  = 9.63…

Q: A solution is prepared by dissolving 0.5482 grams of iron(III) nitrate in enough water to make 100.0…

A: Molarity (M) :-  The number of moles of solute dissolved in one litre of solution is known as…

Q: A student created a solution in a 100 mL volumetric flask by adding 3.753 g KNO3 and 25.77 mL 0.358…

A:

Q: The Fe2+ content of iron tablets was determined by titration with a freshly standardised solution of…

A: Approach to solving the question:To prepare 250 cm³ of Fe²⁺ solution from five iron tablets, each of…

Q: 3. A student followed the procedure of this experiment to determine the percent NaOCl in a…

A: The volume of bleaching solution diluted from The volume of  required to neutralize 20 mL bleaching…

Q: Suppose you have 50. mL of 0.333 M magnesium acetate. You transfer 5.00 mL of this solution to a…

A:

Q: By pipet, 10.00 mL  of a 0.823 M stock solution of potassium permanganate (KMnO4) was transferred to…

A:

Q: The percentage of protein in most food products is found arbitrarily by multiplying the percentage…

A: One of most important element that is present in protein is nitrogen. In the food product, the…

Q: You have 2.50 L of an acetic acid stock solution with unknown concentration.  You first dilute…

A:

Q: 4.91 mL of NaOH solution was required to reach the endpoint when titrated against 0.1005 g of…

A: Here 4.91 ml of NaOH solution was required to react with 0.1005 g of KHP dissolved in 50ml water.We…

Q: I want to know the source of this question( The name of the book with the edition) QI/ The calcium…

A: The determination of the concentration of a substance/ion in a solution has great significance in…

Q: 1. What is the concentration, in parts per million, of a solution in which 600 grams of aluminum…

A: Since you have asked multiple question, we will solve the first question for you as per our…

Q: Chemical XYZ is comprised of 0.020 mol of iron(II) sulfate. It requires 22.5 mL of potassium…

A: Balanced equation for the given reaction is:                                         5Fe2+ + MnO4- +…

Q: The Fe2+ (55.845 g/mol) content of a 2.433 g steel sample dissolved in 50.00 mL of an acidic…

A:

Q: You are asked to determine the percentage of the components of a mixture containing sodium iodide,…

A: Given that, Mass of BaSO4 recovered = 2.04 gms Total Mass of mixture sample = 4.42 gms Therefore, %…

Q: 5. Using YOUR data for this experiment calculate your answers and fill in the following table. (Show…

A: Average mass- It is the sum of the masses of all the samples divided by the total number of samples.…

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: A 25.0 mL sample of an electroplating solution is analyzed for its sulfuric acid H₂SO₄…

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

Q: The following solutions are needed to be prepared for the titration procedure: 1. 20 mL of 2 M HCl…

A: Given: Mass of Fe(OH)n used = 1.0867 g Volume of HCl solution used = 20 mL = 0.020 L…

Q: Zinc and magnesium react with hydrochloric acid to produce the metal chlorides and hydrogen gas. A…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: 185 mL sample of 1.20 M Pb(NO₃)₂ is mixed with 61.5 mL of 1.50 M NaCl, and the PbCl₂ precipitate is…

A: Lead nitrate reacts with sodium chloride to form lead chloride and sodium nitrate. Write the…

Q: Aqueous solutions of 16.7% by mass hydrogen peroxide, H202 (molar mass =34.016 g mol1) are used to…

A: Given that: Mass percent of H2O2 = 16.7% Density of solution = 1.06 g/mL

Q: A student followed the procedure of this experiment to determine the percent NaOCI in a commercial…

A: “Since you have posted a question with multiple sub-parts, we will solve first Four sub-parts for…

Q: H2. Titrations are performed by a scientist in the laboratory as follows: a solution of deuterated…

A: A laboratory technique where the concentration of an unknown solution is determined using the volume…

Q: A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets…

A: #(a): Given the mass of the iron tablet taken to obtain Fe2O3(s) = 2.7544 g  Mass of pure and dry…

Q: By pipet, 9.00 mL of a 0.823 M stock solution of potassium permanganate (KMn04) was transferred to a…

A: Given Molarity of KMnO4 stock solution = 0.823 M = M1Volume of KMnO4 stock solution Taken = 9.0 mL =…