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Palladium(II) forms an intensely colored complex at pH 3.5 with arsenazo III~ at 660

Principles of Instrumental Analysis | 6th Edition | ISBN: 9780495012016 | Authors: Douglas A. Skoog F. James Holler Stanley R. Crouch ISBN: 9780495012016 317

Solution for problem 14-19 Chapter 14

Principles of Instrumental Analysis | 6th Edition

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Principles of Instrumental Analysis | 6th Edition | ISBN: 9780495012016 | Authors: Douglas A. Skoog F. James Holler Stanley R. Crouch

Principles of Instrumental Analysis | 6th Edition

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Problem 14-19

Palladium(II) forms an intensely colored complex at pH 3.5 with arsenazo III~ at 660 nm.33 A meteorite was pulverized in a ball mill, and the resultmg powderwas digested with various strong mineral acids. The resultmg solutIon was evaporatedto dryness, dissolved in dilute hydrochloric acid, and separated from mterferentsby ion-exchange chromatography. The resulting solutton contamm,g anunknown amount of Pd(lI) was then diluted to 50.00 mL With pH 3.5 buffer.Ten-milliliter aliquots of this analyte solution were then transferred to SIX50~~Lvolumetric flasks. A standard solution was then prepared that was 1.00 X 10 t Min Pd(II). Volumes of the standard solution shown in the table were then pIpe -ted into the volumetric flasks along with 10.00 mL of 0.01 M arsenazo III. Eachsolution was then diluted to 50.00 mL, and the absorbance of each solution wasmeasured at 660 nm in I.oo-cm cells.Enter the data into a spreadsheet. and construct a standard-additions plot ofthe data.Determine the slupe and intercept of the line (c) Determine the standard dcviation of the slope and of the intercept.(d) Calculate the concentration of Pd(II) in the analne solution.(e) Find the standard deviation of the measured concentration.

Step-by-Step Solution:
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Deciding Equilibrium: ● Neutral O beats N- ● Neutral O beats O- ● Neutral N beats O- ● Neutral N will not beat Halogen ● Neutral N beats neutral O ● Induction is through single bonds, and only helps if 3 or less carbons away Chair flips and conformations: ● Chair flip- stays the same direction, but changes from axial to equatorial...

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Chapter 14, Problem 14-19 is Solved
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Textbook: Principles of Instrumental Analysis
Edition: 6
Author: Douglas A. Skoog F. James Holler Stanley R. Crouch
ISBN: 9780495012016

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Palladium(II) forms an intensely colored complex at pH 3.5 with arsenazo III~ at 660

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