Percent variance for Kc for Fe3+ + SCN- <=> Fe(SCN)2+ = 110%, the average value for kc = 186 Percent variance for Kc for Fe3+ + 2SCN- <=> [Fe(SCN)2+] = 1680%, the average value for kc = 1.10E+06 1a. What does the variance tell you about the relative plausibility of the two possible equilibrium constant expressions? 1b. Suppose you are asked to design an experiment to determine the enthalpy change for the formation of Fe(SCN)2+. How would you go about obtaining a data set that would allow you to determine whether this reaction is endothermic or exothermic? 1c. Comparing the data from parts 1 and 2, briefly explain how your calculations confirm the assumption of one of the proposed reactions but not the other.

Percent variance for Kc for Fe3+ + SCN- <=> Fe(SCN)2+ = 110%, the average value for kc = 186 Percent variance for Kc for Fe3+ + 2SCN- <=> [Fe(SCN)2+] = 1680%, the average value for kc = 1.10E+06 1a. What does the variance tell you about the relative plausibility of the two possible equilibrium constant expressions? 1b. Suppose you are asked to design an experiment to determine the enthalpy change for the formation of Fe(SCN)2+. How would you go about obtaining a data set that would allow you to determine whether this reaction is endothermic or exothermic? 1c. Comparing the data from parts 1 and 2, briefly explain how your calculations confirm the assumption of one of the proposed reactions but not the other.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter10: Atomic Emission Spectrometry

Section: Chapter Questions

Problem 10.11QAP

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