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The iron-binding site of transferrin in Figure 17-7 can accommodate certain other metal

Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris ISBN: 9781429218153 475

Solution for problem 17-21 Chapter 17

Quantitative Chemical Analysis | 8th Edition

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Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris

Quantitative Chemical Analysis | 8th Edition

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Problem 17-21

The iron-binding site of transferrin in Figure 17-7 can accommodate certain other metal ions besides Fe3 and certain other anions besides CO3 2. Data are given in the table for the titration of transferrin (3.57 mg in 2.00 mL) with 6.64 mM Ga3 solution in the presence of the anion oxalate, C2O4 2, and in the absence of a suitable anion. Prepare a graph similar to Figure 17-10, showing both sets of data. Indicate the theoretical equivalence point for the binding of one and two Ga3 ions per molecule of protein and the observed end point. How many Ga3 ions are bound to transferrin in the presence and in the absence of oxalate? Titration in presence of C2O3 2 Titration in absence of anion Total L Absorbance at Total L Absorbance at Ga3 added 241 nm Ga3 added 241 nm 0.0 0.044 0.0 0.000 2.0 0.143 2.0 0.007 4.0 0.222 6.0 0.012 6.0 0.306 10.0 0.019 8.0 0.381 14.0 0.024 10.0 0.452 18.0 0.030 12.0 0.508 22.0 0.035 14.0 0.541 26.0 0.037 16.0 0.558 18.0 0.562 21.0 0.569 24.0 0.576

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Rebecca Plummer Dr. Raymond Shaack Catalysis RATE DEPENDS ON ACTIVATION ENERGY (E ) a  Catalysis: the use of a catalyst to change the speed of a reaction  Catalyst: a molecule that can change the speed of a reaction but is not permanently altered itself o Appears at the beginning of reaction o Appears unchanged after the reaction o Homogenous Catalysis: catalysts are in the same phase as the other reactants (solid, liquid, gas) o Heterogeneous Catalysis: catalysts are in s different phase as the other reactants  Enzyme Catalysis o Enzymes are catalysts in the body that change the speed of specific reactions in the body

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Chapter 17, Problem 17-21 is Solved
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Textbook: Quantitative Chemical Analysis
Edition: 8
Author: Daniel C. Harris
ISBN: 9781429218153

Quantitative Chemical Analysis was written by and is associated to the ISBN: 9781429218153. The full step-by-step solution to problem: 17-21 from chapter: 17 was answered by , our top Chemistry solution expert on 03/16/18, 04:33PM. This textbook survival guide was created for the textbook: Quantitative Chemical Analysis, edition: 8. The answer to “The iron-binding site of transferrin in Figure 17-7 can accommodate certain other metal ions besides Fe3 and certain other anions besides CO3 2. Data are given in the table for the titration of transferrin (3.57 mg in 2.00 mL) with 6.64 mM Ga3 solution in the presence of the anion oxalate, C2O4 2, and in the absence of a suitable anion. Prepare a graph similar to Figure 17-10, showing both sets of data. Indicate the theoretical equivalence point for the binding of one and two Ga3 ions per molecule of protein and the observed end point. How many Ga3 ions are bound to transferrin in the presence and in the absence of oxalate? Titration in presence of C2O3 2 Titration in absence of anion Total L Absorbance at Total L Absorbance at Ga3 added 241 nm Ga3 added 241 nm 0.0 0.044 0.0 0.000 2.0 0.143 2.0 0.007 4.0 0.222 6.0 0.012 6.0 0.306 10.0 0.019 8.0 0.381 14.0 0.024 10.0 0.452 18.0 0.030 12.0 0.508 22.0 0.035 14.0 0.541 26.0 0.037 16.0 0.558 18.0 0.562 21.0 0.569 24.0 0.576” is broken down into a number of easy to follow steps, and 180 words. This full solution covers the following key subjects: . This expansive textbook survival guide covers 55 chapters, and 1224 solutions. Since the solution to 17-21 from 17 chapter was answered, more than 336 students have viewed the full step-by-step answer.

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The iron-binding site of transferrin in Figure 17-7 can accommodate certain other metal