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The basic principles of Hess's Law do not apply to the absolute entropies listed in tables of Standard Thermodynamic Quantities for defining ArxnSº. True O False

The basic principles of Hess's Law do not apply to the absolute entropies listed in tables of Standard Thermodynamic Quantities for defining ArxnSº. True O False

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Question:** The basic principles of Hess's Law do not apply to the absolute entropies listed in tables of Standard Thermodynamic Quantities for defining \( \Delta_{\text{rxn}} S^\circ \). - ○ True - ○ False **Explanation:** In this question, you need to evaluate the applicability of Hess's Law regarding absolute entropies. Hess's Law states that the total enthalpy change for a reaction is the same regardless of the path taken. However, absolute entropies are different as they are dependent on absolute values rather than just changes. Therefore, while Hess's Law can be applied to enthalpy calculations, special rules apply to absolute entropy calculations, particularly in the context of defining \( \Delta_{\text{rxn}} S^\circ \), which is the change in standard entropy for a reaction.
Transcribed Image Text:**Question:** The basic principles of Hess's Law do not apply to the absolute entropies listed in tables of Standard Thermodynamic Quantities for defining \( \Delta_{\text{rxn}} S^\circ \). - ○ True - ○ False **Explanation:** In this question, you need to evaluate the applicability of Hess's Law regarding absolute entropies. Hess's Law states that the total enthalpy change for a reaction is the same regardless of the path taken. However, absolute entropies are different as they are dependent on absolute values rather than just changes. Therefore, while Hess's Law can be applied to enthalpy calculations, special rules apply to absolute entropy calculations, particularly in the context of defining \( \Delta_{\text{rxn}} S^\circ \), which is the change in standard entropy for a reaction.
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