the "free" energy for a fictitious example where the reaction is exothermic (AH=-100 kJ) but has a negative entropy (AS = -20 J/K, 6 kJ at 298K). The amount of free energy in this examples he free energy is the maximum energy available to do work after accounting for the increase in entropy of the system. he free energy is the minimum energy available to do work after accounting for the decrease in entropy of the system. The free energy is the maximum energy available to do work after accounting for the decrease in entropy of the system. The free energy is the minimum energy available to do work after accounting for the increase in entropy of the system. nit Request Answer back

the "free" energy for a fictitious example where the reaction is exothermic (AH=-100 kJ) but has a negative entropy (AS = -20 J/K, 6 kJ at 298K). The amount of free energy in this examples he free energy is the maximum energy available to do work after accounting for the increase in entropy of the system. he free energy is the minimum energy available to do work after accounting for the decrease in entropy of the system. The free energy is the maximum energy available to do work after accounting for the decrease in entropy of the system. The free energy is the minimum energy available to do work after accounting for the increase in entropy of the system. nit Request Answer back

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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Enthalpy and Gibb's Free Energy Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: AHxn = AH₂ (products) - AH (reactants) Entropy change, AS°, is a measure of the number of energetically equivalent microstates introduced into the system during the reaction. The degree of spontaneity of a reaction is represented by the Gibbs free energy, AGO. The Gibbs free energy depends on both the enthalpy and entropy changes that take place during the reaction: AG=AH° - TAS° where T is standard temperature, 298 K. ▼ Part A Calculate the standard enthalpy change for the reaction where the heats of formation are given in the following table: ΔΗ Substance (kJ/mol) A B C D -241 -407 191 -501 Express your answer in kilojoules. ► View Available Hint(s) {—| ΑΣΦ AHixn= 2A+B=2C+2D ? kJ…