General Chemistry: Principles and Modern Applications (11th Edition)
11th Edition
ISBN: 9780132931281
Author: Ralph H. Petrucci, F. Geoffrey Herring, Jeffry D. Madura, Carey Bissonnette
Publisher: PEARSON
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Question
Chapter 24, Problem 50IAE
Interpretation Introduction
Interpretation:
The statement is to be verified by assuming the value of total metal ion concentrations for free EDTA.
Concept introduction:
Precipitation is defined as the formation of insoluble solid from the liquid solution. When two more soluble salts react in solution and comes with the solid insoluble product is called as precipitate.
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Is it posible to remove 99% of 1.0 μM CuY2- impurity (by reduction to solid Cu) from a 10.0 mM CoY2- solution at pH 4.0 without reducing any cobalt? Here, Y (actually, Y4-) is EDTA and the total concentration of free EDTA is 10.0 mM. Hint: Concepts of Equilibrium of EDTA Complex Formation are involved in the solution of this problem.
Standard reduction potentials to use in this problem are:CuY2- + 2e- ➙ Cu(s) + Y4- E°= -0.216 VCo2+ + 2e- ➙ Co(s) E°= -0.282 V.
Comparing the two quantities based on the given condition, which is greater I or II? or are they equal? can the quantities be measured?
Consider the analysis of Fe in ore using permanganate as titrant.
Under the same acidic conditions
I. % Fe with pre-reduction
II. % Fe without pre-reduction
A 0.9352g sample of ore containing Fe³+, Al³+ and Sr²+ was dissolved and made up to 500.00 mL. The analysis of metals was performed using complexation volumetry. Initially, an aliquot of 50.00 mL had its pH adjusted to 1.0 and titrated with a standard 0.03145 mol/L EDTA solution, requiring 6.95 mL to reach the end point. Subsequently, another 25.00 mL aliquot was buffered at pH=5 and titrated with the same EDTA solution, requiring 6.24 mL to reach the end point. Finally, a third aliquot of 25.00 mL was titrated at pH=11, requiring 11.10 mL of the same EDTA solution to complete the titration.
Given the molar masses: Fe=55.845 g/mol; Al-26.982 g/mol and Sr-87.620 g/mol.
a) Determine the percentage of each of the metals in the sample.
b) Explain why the change in pH allows the determination of the three ions in this sample.
Chapter 24 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
Ch. 24 - Prob. 1ECh. 24 - Prob. 2ECh. 24 - Prob. 3ECh. 24 - Write appropriate formulas for the following. a....Ch. 24 - Prob. 5ECh. 24 - Prob. 6ECh. 24 - Prob. 7ECh. 24 - Prob. 8ECh. 24 - Prob. 9ECh. 24 - Prob. 10E
Ch. 24 - Prob. 11ECh. 24 - Prob. 12ECh. 24 - If A, B, C, and D are four different ligands, a....Ch. 24 - Prob. 14ECh. 24 - Prob. 15ECh. 24 - The structures of four complex ions are given....Ch. 24 - Prob. 17ECh. 24 - Prob. 18ECh. 24 - Prob. 19ECh. 24 - In contrast to the case of Co2+ considered in...Ch. 24 - Prob. 21ECh. 24 - Prob. 22ECh. 24 - Prob. 23ECh. 24 - Prob. 24ECh. 24 - Prob. 25ECh. 24 - Prob. 26ECh. 24 - Prob. 27ECh. 24 - Prob. 28ECh. 24 - Prob. 29ECh. 24 - Prob. 30ECh. 24 - Prob. 31ECh. 24 - Prob. 32ECh. 24 - Prob. 33ECh. 24 - Prob. 34ECh. 24 - Prob. 35ECh. 24 - Prob. 36ECh. 24 - Prob. 37ECh. 24 - Draw dashed and solid wedge diagrams of...Ch. 24 - Prob. 39IAECh. 24 - Prob. 40IAECh. 24 - Prob. 41IAECh. 24 - Prob. 42IAECh. 24 - Prob. 43IAECh. 24 - Prob. 44IAECh. 24 - Prob. 45IAECh. 24 - Prob. 46IAECh. 24 - Prob. 47IAECh. 24 - Prob. 48IAECh. 24 - Prob. 49IAECh. 24 - Prob. 50IAECh. 24 - Prob. 51IAECh. 24 - Prob. 52IAECh. 24 - Prob. 53IAECh. 24 - Prob. 54IAECh. 24 - The compound CoCl22H2O4NH2 may be one of the...Ch. 24 - Prob. 56IAECh. 24 - Provide a valence bond description of the bonding...Ch. 24 - Prob. 58IAECh. 24 - Prob. 59IAECh. 24 - Prob. 60IAECh. 24 - Prob. 61IAECh. 24 - Prob. 62IAECh. 24 - The graph that follows represents the molar...Ch. 24 - Prob. 64FPCh. 24 - Prob. 65FPCh. 24 - The crystal field stabilization energy (CFSE) can...Ch. 24 - In your own words, describe the following terms or...Ch. 24 - Briefly describe each of the following ideas,...Ch. 24 - Prob. 69SAECh. 24 - The oxidation state of Ni in the complex ion...Ch. 24 - Prob. 71SAECh. 24 - Prob. 72SAECh. 24 - Prob. 73SAECh. 24 - Prob. 74SAECh. 24 - Prob. 75SAECh. 24 - The most soluble of the following solids in...Ch. 24 - Prob. 77SAECh. 24 - Write appropriate formulas for the following...Ch. 24 - Prob. 79SAECh. 24 - Prob. 80SAECh. 24 - Prob. 81SAECh. 24 - Prob. 82SAECh. 24 - Prob. 83SAECh. 24 - Prob. 84SAE
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