3. A 100-mL sample of hard water is titrated with the EDTA solution in problem 2. The same amount of Mg** is added, and the volume of EDTA required is 31.25 mL. a. What is the volume of EDTA used in titrating the Ca²+? mL b. How many moles of EDTA are there in that volume? mol How many moles of Ca²+ are there in 100 mL of water? mol

Q: 6. Titration of Ca²+ and Mg2+ in a 50.00-mL hard water sample required 23.65 mL of 0.01205 M EDTA. A…

A: A question based on environmental pollution that is to be accomplished.

Q: 4. Calcium in powdered milk was determined by ashing a 1.500g sample and then titrating the calcium…

A: Given: Mass of sample = 1.500 gVolume of EDTA needed for titration = 12.09 mLVolume of zinc solution…

Q: The volume of EDTA 0,0800 mol/L is required to titrate 21,70 mL of a Mg(NO3)2 solution with a…

A:

Q: (ii) Consider the titration of 25.00 mL of 0.02000 M CaSO4 with 0.01000 M EDTA at pH 10.00. Write…

A: volume of EDTA = 20ml volume of CaSO4 = 25ml pH = 10

Q: 0.75 gm of calcium carbonate is dissolved in 1 liter of distilled water. 100 ml of this standard…

A: 0.75 gm of calcium carbonate is dissolved in 1 liter of distilled water. 100 ml of this standard…

Q: 50.00 mL of a solution containing iron (II) and iron (III) when titrated at pH2.0, 12.50 mL 0.01200…

A: Answer is explained below.  From the given plot it is clear that at ph = 2.0, only Fe3+ reacts with…

Q: 50.00 mL of a solution containing both Ni* and Pb2* ions requires 46.32 mL of a 0.02041 M EDTA…

A: 1) Given: Volume of solution = 50.00 mL. Concentration of EDTA = 0.02041 M Volume of EDTA required…

Q: What are the answers to prelab  questions 1-4

A: Molarity = moles/volume of NaOH.0.096×0.0349 L = Moles of NaOH.Moles of NaOH = 3.3504 × 10-3…

Q: A 47.00 ml aliquot from a 0.490 L solution that contains 0.410 g of MnSO, (MW = 151.00 g/mol)…

A:

Q: 3. A 100 mL sample of hard water is titrated with 22.4 mL of the EDTA solution from problem 2. The…

A: Volume of hard water sample = 100mL

Q: 100 mL of mineral water containing Mg2+ and Ca2+ is taken and titrated with 86.65 mL of 0.06120 M…

A: We know that   EDTA forms 1:1 complex with metals Mg+2 and Ca+2 Initial moles of EDTA = M*V =…

Q: 0.15 gm of calcium carbonate is dissolved in 1 liter of distilled water. 20 ml of this standard hard…

A: Hardness  of water is due to calcium and magnesium within the water molecules. Hardness or softness…

Q: An EDTA solution was prepared by dissolving approximately 4 g of the disodium salt in approximately…

A: Given mass of MgCO3 = 0.07682 g Volume of water = 1 L Molar mass of MgCO3 = 84.31 g/mol

Q: If you have a sample of 100 mg/L of calcium, and you have two standardized EDTA solutions of 0.005 M…

A: the balanced equation for the reaction between EDTA and Ca is  Ca+2 + EDTA–4 ----------->…

Q: An unknown Ca solution was prepared by weighing a 2.122 g sample, dissolving it in HCl and then…

A:

Q: How much 0.0500 M EDTA is needed to titrate the Mg and Ca in a 0.2385-g sample that is 92.5%…

A: Given,  Molarity of EDTA = 0.0500 M  Mass of the sample = 0.2385 g  Mass percent of dolomite = 92.5%…

Q: A 15.00 g sample containing mixed alkali and other inert components was dissolved and diluted to 300…

A:

Q: Titration of Ca2+ and Mg2+ in a 50.00 mL sample of hard water required 23.65 mL of 0.01205 M EDTA. A…

A:

Q: If 10.00 mL sample of 0.01 M standard Ca2+ solution is titrated with 9.8 mL of EDTA solution, what…

A: Interpretation -  To determine the molarity of the EDTA when 10.00 mL sample of 0.01 M standard Ca2+…

Q: 1. A solution contains 1.238 mg of CoSO4 (155.0 g/ mol) per milliliter. Calculate  the volume of…

A: Here we are required to find the molar concentration of EDTA.

Q: A student titrated a 25.00 mL sample of water with 0.0200 M EDTA. The titration required 20.40 mL of…

A: This is a simple volumetric titration,  using M1V1=M2V2 we can obtain the strength of water sample.…

Q: 8.A 75mL sample of water is titrated with 0.100M EDTA. exactly 16.9mL of EDTA are required to reach…

A: Answer:- This question is answered by using the simple concept of calculation of hardness using the…

Q: 100 mL tap water is titrated with 20 mL of 0.02 M EDTA solution to determine the hardness of the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Calculate the concentration of an EDTA solution of which 24.22 mL were needed to titrate the Ca2+…

A: Given: Volume of EDTA solution used = 24.22 mL = 0.02422 L…

Q: The total concentration of Ca²+ and Mg²+ in a sample of hard water was determined by titrating a…

A: SOLUTION: Step 1: The concentration of magnesium ion is calculated as follows:

Q: Calculate the volume of 0.08640M EDTA needed to titrate a 25.00-mL aliquot of this solution.

A: Given, Mass of cobalt sulfate present in the solution = 1.694 mg = 0.001694 g Molar mass of cobalt…

Q: Calcium in powdered milk is determined by ashing a 1.50 g sample and then titrating the calcium with…

A: The given information is: Mass of sample = 1.50 g = 0.00150 kg Volume of EDTA used = 12.1 ml Volume…

Q: Titration of Ca 2+ and Mg 2+ in a 50.00 mL sample required 25.50 mL Of 0.01115 M EDTA. A second 50…

A:

Q: Chemistry An EDTA solution was prepared by dissolving 2 g of the salt in 0.500 L of water. Aliquots…

A: The molarity of MgCO3 can be calculated from its given concentration in g/L as: MMgCO3=0.7682…

Q: 0.45 gm of calcium carbonate is dissolved in 1 liter of distilled water. 50 ml of this standard…

A: 1mL of standard hard water contains 1mg of CaCO3.

Q: A 0.2054 g sample of CaCO, (primary standard) is dissolved in hydrochloric acid and the solution is…

A: Ca2++EDTA →Cu2+EDTA2- complexation reaction* Primary standards, Moles of CaCO3 = 0.2054 gm100…

Q: A 50.0-mL water sample was determined for hardness in terms of CACO3. It required 40.0-mL of 0.0100M…

A: Given: Volume of water sample = 50.0 mL Volume of EDTA = 40.0 mL Molarity of EDTA solution = 0.01 M…

Q: .1520 g CaCO3 was used to make a 100.00ml solution.  If a 10.00ml aliquot of the CaCO3 solution is…

A: Number of moles of calcium carbonate = Mass in gram / Molar mass…

Q: 50.00 mL of a water sample is diluted with 150.00mL deionized water. The diluted sample has a lead…

A: this is an example of dilution law we are required to find the lead content (in ppb) of the original…

Q: If you have a sample of 42.6 mg/L of calcium and 7.2 mg/L of magnesium, what concentration does the…

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Q: 24-hr urine specimen was diluted to 2.000 L. After the solution was buffered to pH 10, a 10.00-mL…

A: Introduction :  EDTA (ethylenediaminetetraacetic acid) is a chelating agent. EDTA, is a chemical…

Q: A sample of pure CaCO3 weighing 0.2428g is dissolved in HCl and the solution diluted to 250ml in a…

A: mass CaCO3 = 0.2428 g Concentration of CaCO3 in original solution = (mass CaCO3) / (volume of…

Q: Write the chemical equation for this: Calcium in powdered milk is determined by dry ashing a 1.50-g…

A: In this problem, we first calculate the m.moles of EDTA and from that, we can calculate the mass of…

Q: The cadmium and lead ions in a 50.00 mL sample required 40.09 mL of a 0.005000 M EDTA for titration.…

A:

Q: A Na2S2O3 titrant was standardized by taking 50.0 mL of 6.7863 x 10-3 M standard KIO3 solution,…

A: here we are required to find the concentration of Na2S2O3 titrant

Q: A 1.43 x 10-4 L solution of 45.7 mg/mL protein was analyzed using the Kjeldahl procedure. After…

A: Kjeldahl method is used to quantitative method  and it is used in the determination of Nitrogen in…

Q: esign an EDTA masking titration that can find the concentration of Al 3+, Ca2+, and Fe3+. Explain…

A: EDTA is an unselective reagent forming complexes with  metal ions like Al3+ , Ca2+ , Fe3+ and…

Q: Calcium in powdered milk is determined by dry ashing a 1.50-g sample and then titrating the calcium…

A: The given information is: Mass of sample = 1.50 g = 0.00150 kg Volume of EDTA used = 12.1 ml Volume…

Q: Water samples near the Sangonomiya Shrine was titrated against 0.01000 M EDTA to test its water…

A: First case: 50 ml water+ NaOH required 13.5 ml of 0.0100 M EDTA Second case: 50 ml water required…

Q: Calculate the volume of 0.0500 M EDTA needed to titrate 29.13 mL of 0.0598 M Mg(NO3 )2. Use a MW…

A:

Q: 3. A 100 mL sample of hard water is titrated with 22.4 mL of the EDTA solution from problem 2. The…

A: Given information :-  additional info: 1)25.95 mL of EDTA are needed to titrate the Ca2+ ion in the…

Q: Calcium in powdered milk is determined by dry ashing a 1.50-g sample and then titrating the calcium…

A: mass of sample = 1.5 g Titrating volume = 10 ml mass of zinc = 0.632 g Molar mass of calcium = 40…

Q: The dissolution of borax is: Na2B4O5(OH)4 • 8H2O(s) ⇌ 2 Na+(aq) + B4O5(OH)42–(aq) + 8 H2O(l)…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…