A 1.509-g samle of a Pb/Cd alloy was dissolved in acid and diluted to exactly 250.0 mL in a volumetric flask. A 50.00-mL aliquot of the diluted solution was brought to a pH of 10.0 with an HCN/NaCN buffer, which also served to mask the Cd2+; 11.56mL of the EDTA solution were needed to titrate the Pb2+. Calculate the percentage of Pb and Cd in the sample.

Q: A 50.00 ml aliquot of a solution containing Ca2+ and Mg2+ was buffered at pH 10 and titrated with…

A: The objective of the question is to determine the concentration of Ca2+ and Mg2+ in the solution.…

Q: Calculate the equilibrium concentration of Zn2 + in a solution that was prepared by mixing 75.0 mL…

A: Zinc is determined by EDTA titration in almost the same way magnesium is - in the pH 10 against…

Q: The concentration of a solution of EDTA was determined by standardizing against a solution of Ca2+…

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

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: after dissolving in 50.0 ml of good water, the zinc in a 0.3232 gram sample of foot powder was…

A: The percentage of Zn can be calculated asThe weight of zinc = 0.3232 gramsMolar mass of Zn2P2O7 =…

Q: A 50.00 ml aliquot of a solution containing Ca2+ and Mg2+ was buffered at pH 10 and titrated with…

A: The objective of the question is to calculate the molar concentration of Mg2+ in a solution. This…

Q: In order to adjust the EDTA solution, 10 mL of 0.01M Ca + 2 sample was taken and 10 mL of pH 10…

A: Ca2+ ions forms a complex compound with EDTA ligand. One mole of Ca2+ inos form complex with one…

Q: A 15.00 mL urine specimen containing Ca2+ and Mg2+ was diluted to 2.000 L. A 10.00 mL sample was…

A:

Q: The concentration of CA2+ in an unknown solution was determined by titration with the EDTA solution…

A: Molarity of EDTA solution = 0.000085 M Volume of EDTA solution = 35.54 mL Volume of the diluted…

Q: A 49.10 mL aliquot from a 0.500 L solution that contains 0.530 g of MnSO4 (MW=151.00 g/mol) required…

A: Solution -

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

A:

Q: A 30-mL portion of a solution containing Ca2+ and Mg2+ was titrated with 28.19 mL of 0.213 M EDTA at…

A: Complexometric titration with EDTA is used for the determination of metal ions line calsium and…

Q: A titration of 50.0 mL 0.010 M propanoic acid with 0.010 M KOH was carried out. Indicate the pH at…

A: Answer: This question is based on hydrolysis of salt. Salt of weak acid and strong base gets…

Q: For the complexometric titration

A: The method uses a very large molecule called EDTA which forms a complex with calcium ions. EDTA…

Q: A 0.3674 g powdered milk sample was analyzed for calcium by igniting in a crucible at 1000°C, the…

A: Analysis of sampleMass of sample = 0.3674 gTemperature = 1000oCVolume of EDTA required = 15.62…

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

A:

Q: Standard CaCO, is used to standardize the EDTA solution prior to titration. Suppose 0.385 g of CaCO,…

A:

Q: which of the following is the concentration of the EDTA solution in terms of molarity?

A: Ca2+ forms a complex compound with EDTA ligand. EDTA is a hexadentate ligand. Onle mole of Ca2+…

Q: a. A 0.3108-g sample of primary-standard-grade Na2 C2O4 was dissolved in H2SO4 and titrated with…

A:

Q: A 1.000 mL aliquot of a solution containing Cu²+ and Ni²+ is treated with 25.00 mL of a 0.03703 M…

A: The objective of the question is to find out the volume of 0.02138 M Zn²+ required for the back…

Q: After solubilization, 150 mg of a silver sample is titrated with 25 mL of a solution containing 48.5…

A: Introduction: Molarity is often used to express the concentration of the solution. It is defined as…

Q: A solution was prepared by dissolving about 30.00m g of EDTA  in approximately 1 L of water and…

A: The solution is given below -

Q: A 1.000 mL aliquot of a solution containing Cu²+ and Ni²+ is treated with 25.00 mL of a 0.03703 M…

A: Given,Concentration of EDTA = 0.03703 M

Q: A solution is prepared by mixed 50.0 mL of 0.0400 M Ni2+ with 50.00 mL of 0.0400 M EDTA. Calculate…

A: The objective of this question is to calculate the concentration of Ni2+ when a solution is prepared…

Q: A 0.72g sample of foot powder containing Zinc was titrated with 21.3mL of 0.02M EDTA. Calculate the…

A:

Q: A 1.000 mL aliquot of a solution containing Cu²+ and Ni2+ is treated with 25.00 mL of a 0.03992 M…

A: Given, Concentration of EDTA = 0.03992 M

Q: Calcium in powdered milk is determined by dry ashing a 3.00g sample then titrating the calcium with…

A: Concentration of Ca can be figure out by calculating concentration of EDTA solution.

Q: 50.00 mL of a solution containing both Ni2* and Pb²+ ions requires 46.32 ml of a 0.02041 M EDTA…

A:

Q: A water was tested for water hardness. A 50.00 mL aliquot was prepared and buffered to pH 10.0, it…

A:

Q: A standard solution contains 100 ppm of Fe, which was found to have an absorbance of 0.151 au at 508…

A:

Q: A 47.90 mL aliquot from a 0.500 L solution that contains 0.480 g of MnSO4 (MW= 151.00 g/mol)…

A: The objective of the question is to determine the mass of calcium carbonate.

Q: What is the color of the complex formed from the reaction of Co2+ and quercetin? Does the complex…

A: The reaction between Co2+ and  Quercetin yields a brownish yellow coloured complex at pH 6.4 using…

Q: 50 mL of a sample known to contain Mg+2 was taken and titrated with 0.075 M EDTA standard solution…

A: Magnesium solution is titrated complexometrically with a standard EDTA solution. we need to…

Q: A 1.000 mL aliquot of a solution containing Cu²+ and Ni²+ is treated with 25.00 mL of a 0.03169 M…

A: Given: 1.00  mL aliquot containing Cu2+ and Ni2+ is treated with 25.00 mL of 0.03169 M EDTA Back…

Q: A 30-mL portion of a solution containing Ca²+ and Mg2+ was titrated with 28.19 mL of 0.207 M EDTA at…

A: Given that, In the first titration Volume of Ca-Mg solution = 30 mL Volume of EDTA used = 28.19 mL…

Q: What is the ppm Zn in the orginal foor powder sample, after dissolving 50.0 ml of good water, the…

A: From Gas law

Q: Titration of I 2 produced from 0.1500 g of primary-standard-grade KIO 3 required 42.30 mL of sodium…

A: Answer is explained below.  Ans: The concentration of the Na2S2O3 is 0.099 M.

Q: 2. Titration of Ca²+ and Mg²+ in a 50mL sample of hard water required 23.65mL of 0.01205M EDTA. A…

A: Given titration is of metal ions with EDTA which is an example of complexometric titration.So first…

Q: Consider the titration of 150.0 mL of a 0.225 M solution of (C2H5)NH with 0.45 M HCl(aq).  Kb= 4.3…

A: (C2H5)2NH is a weak base with Kb = 4.3*10-4. HCl is a strong acid. Hence (C2H5)2NH and HCl will…

Q: what is the value of magnesium in ppm in the sample?(Mg:24 g/mol)

A: The titration reaction is: Mg2+ + EDTA-4 ====> Mg(EDTA)-2 Let us first calculate moles of EDTA…

Q: The Cl– content of a solution was analyzed via an EDTA titration. 2.00 g of AgNO3 was added to 25.00…

A: It is an example of back titration. In such type of titration, two titrants are present, out of…

Q: The Telluride ion was determined by indirect titration with EDTA. To a solution conta 50.00 mL of…

A: Given Concentration of Zn(ClO4)2= 0.08664 M Given Telluride Solutions = 50 ml We have to calculate…

Q: A 50.00 ml aliquot of a solution containing Ca2+ and Mg2+ was buffered at pH 10 and titrated with…

A: The objective of the question is to calculate the molar concentration of Mg2+ in the given solution.…

Q: A solid containing tris was dissolved in water and brought to a total volume of 50.00 ml. A 10.00 ml…

A: