Chemistry: Principles and Reactions
8th Edition
ISBN: 9781305079373
Author: William L. Masterton, Cecile N. Hurley
Publisher: Cengage Learning
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Chapter 19, Problem 51QAP
A child eats 10.0 g of paint containing 5.0% Pb. How many grams of the sodium salt of EDTA, Na4(EDTA)should he receive to bring the lead into solution as Pb
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0.7682 g MgCO3 is dissolved in 1000 mL water, 50 mL of this solution is taken and titrated with EDTA. Calculate the molar concentration of EDTA since 42.35 mL of EDTA is consumed in the titration. (MgCO3: 84 g / mole).
Write the chemical equation for this:
Calcium in powdered milk is determined by dry ashing a 1.50-g sample and then titrating the calcium with EDTA solution; 12.1 mL is required. The EDTA was standardized by titrating 10.0 mL of a zinc solution prepared by dissolving 0.632 g zinc metal in acid and diluting it to 1 L (10.8 mL EDTA required for titration). What is the concentration of calcium in the powdered milk in parts per million?
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Chapter 19 Solutions
Chemistry: Principles and Reactions
Ch. 19 - Prob. 1QAPCh. 19 - Prob. 2QAPCh. 19 - Prob. 3QAPCh. 19 - Platinum(II) forms many complexes, among them...Ch. 19 - Prob. 5QAPCh. 19 - What is the coordination number of the central...Ch. 19 - Prob. 7QAPCh. 19 - Prob. 8QAPCh. 19 - Prob. 9QAPCh. 19 - Prob. 10QAP
Ch. 19 - Prob. 11QAPCh. 19 - Prob. 12QAPCh. 19 - What is the mass percent of sulfur in the...Ch. 19 - Prob. 14QAPCh. 19 - There are four iron atoms in each hemoglobin...Ch. 19 - Vitamin B12 is a coordination compound with cobalt...Ch. 19 - Prob. 17QAPCh. 19 - Prob. 18QAPCh. 19 - Name the following ions or compounds (a)...Ch. 19 - Name the following ions or compounds (a)...Ch. 19 - Prob. 21QAPCh. 19 - Prob. 22QAPCh. 19 - Sketch the geometry of (a)...Ch. 19 - Sketch the geometry of (a) tans-[Cu(Br)2(H2O)4]...Ch. 19 - Prob. 25QAPCh. 19 - Prob. 26QAPCh. 19 - Which of the following octahedral complexes show...Ch. 19 - Prob. 28QAPCh. 19 - Prob. 29QAPCh. 19 - Prob. 30QAPCh. 19 - Prob. 31QAPCh. 19 - Prob. 32QAPCh. 19 - Write an abbreviated orbital diagram and determine...Ch. 19 - Prob. 34QAPCh. 19 - Give the electron distribution in low-spin and/or...Ch. 19 - Prob. 36QAPCh. 19 - Prob. 37QAPCh. 19 - Prob. 38QAPCh. 19 - Prob. 39QAPCh. 19 - Prob. 40QAPCh. 19 - Give the number of unpaired electrons in...Ch. 19 - Prob. 42QAPCh. 19 - Ti(NH3)63+ has a d-orbital electron transition at...Ch. 19 - has a crystal field splitting energy, o, of...Ch. 19 - Prob. 45QAPCh. 19 - Prob. 46QAPCh. 19 - Prob. 47QAPCh. 19 - Prob. 48QAPCh. 19 - Prob. 49QAPCh. 19 - Indicate whether each of the following is true or...Ch. 19 - A child eats 10.0 g of paint containing 5.0% Pb....Ch. 19 - A certain coordination compound has the simplest...Ch. 19 - Prob. 53QAPCh. 19 - In the [Ti(H2O)63+] ion, the splitting between the...
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- A constant current of 1.25 amp is passed through an electrolytic cell containing a 0.050 M solution of CuSO4 and a copper anode and a platinum cathode until 3.00 g of copper is deposited. a How long does the current flow to obtain this deposit? b What mass of silver would be deposited in a similar cell containing 0.15 M Ag+ if the same amount of current were used?arrow_forwardAnswer the following questions by referring to standard electrode potentials at 25C. a Will oxygen, O2, oxidize iron(II) ion in solution under standard conditions? b Will copper metal reduce 1.0 M Ni2(aq) to metallic nickel?arrow_forwardAn electrochemical cell is made by placing an iron electrode in 1.00 L of 0.15 M FeSO4 solution and a copper electrode in 1.00 L of 0.040 M CuSO4 solution. a What is the initial voltage of this cell when it is properly constructed? b Calculate the final concentration of Cu2+ in this cell if it is allowed to produce an average current of l.25 amp for 375 s.arrow_forward
- What volume of F2 gas, at 25C and 1.00 atm, is produced when molten KF is electrolyzed by a current of 10.0 A for 2.00 h? What mass of potassium metal is produced? At which electrode does each reaction occur?arrow_forwardAn aqueous solution of an unknown salt of vanadium is electrolyzed by a current of 2.50 amps for 1.90 hours. The electroplating is carried out with an efficiency of 95.0%, resulting in a deposit of 2.850 g of vanadium. a How many faradays are required to deposit the vanadium? b What is the charge on the vanadium ions (based on your calculations)?arrow_forwardExplain how EDTA interacts with a metal? Why do we use it as a titrating agent? Why is EDTA a common ingredient in food? What is its purpose?arrow_forward
- 0.7682 g MgCO3 is dissolved in 1000 mL of water, 50 mL of this solution is taken and titrated with EDTA. In titration, calculate the molar concentration of EDTA since 42.35 mL of EDTA is spent. (MgCO3: 84 g/mol).arrow_forwardCalcium in powdered milk is determined by dry ashing a 1.50-g sample and then titrating the calcium with EDTA solution; 12.1 mL is required. The EDTA was standardized by titrating 10.0 mL of a zinc solution prepared by dissolving 0.632 g zinc metal in acid and diluting it to 1 L (10.8 mL EDTA required for titration). What is the concentration of calcium in the powdered milk in parts per million?arrow_forwardCalcium in powdered milk is determined by dry ashing a 1.50-g sample and then titrating the calcium with EDTA solution; 12.1 mL is required. The EDTA was standardized by titrating 10.0 mL of a zinc solution prepared by dissolving 0.632 g zinc metal in acid and diluting it to 1 L (10.8 mL EDTA required for titration). What is the concentration of calcium in the powdered milk in parts per million? is the correct answer 2.89 ppm?arrow_forward
- The amount of iron in a meteorite is determined by a redox titration using KMnO4 as the titrant. A 2.1800 g sample is dissolved in acid and the liberated Fe3+ quantitatively reduced to Fe2+ using a Walden reductor. Titrating with 0.02500 M KMnO4 requires 22.0 mL to reach the end point. Determine the %w/w Fe2O3 in the sample of meteorite.arrow_forwardA 0.1200 g sample of pure iron wire was dissolved in acid, reduced to +2 state and titrated with 23.00 mL of cerium (IV). Calculate the molar concentration of the Ce4+ solution.arrow_forwardThe formation constants at 25°C for Fe(CN)64– and Fe(EDTA)2– are 1.00x1037 and 2.10x1014, respectively. Calculate K under standard conditions for the reaction. Calculate ΔG° for the reaction.arrow_forward
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