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Calculate ΔG∘rxn again at 25∘C, but use the equation ΔG∘rxn=ΔH∘rxn−TΔS∘rxn to determine the value. 2. Use your results to calculate ΔG∘rxn at 500.0 K. Express the free energy to four significant figures and include the appropriate units.

Calculate ΔG∘rxn again at 25∘C, but use the equation ΔG∘rxn=ΔH∘rxn−TΔS∘rxn to determine the value. 2. Use your results to calculate ΔG∘rxn at 500.0 K. Express the free energy to four significant figures and include the appropriate units.

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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1. Calculate ΔG∘rxn again at 25∘C, but use the equation ΔG∘rxn=ΔH∘rxn−TΔS∘rxn to determine the value.

2. Use your results to calculate ΔG∘rxn at 500.0 K. Express the free energy to four significant figures and include the appropriate units.

Consider the following reaction: 2CO(g) + 2NO(g) → 2CO2(g) + N2(g) When the standard AG: values are used to calculate the value of AGixn at 25°C, we get -689.6 kJ . Standard thermodynamic quantities for selected substances at 25 °C Substance AH (kJ/mol) |AG; (kJ/mol) | S° (J/(mol · K)) O2 (g) O3 (g) 205.2 142.7 163.2 238.9 CO(g) - 110.5 - 137.2 197.7 - CO2(g) - 393.5 - 394.4 213.8 N2(g) 191.6 NO(g) 91.3 87.6 210.8 NO2(g) 33.2 51.3 240.1
Transcribed Image Text:Consider the following reaction: 2CO(g) + 2NO(g) → 2CO2(g) + N2(g) When the standard AG: values are used to calculate the value of AGixn at 25°C, we get -689.6 kJ . Standard thermodynamic quantities for selected substances at 25 °C Substance AH (kJ/mol) |AG; (kJ/mol) | S° (J/(mol · K)) O2 (g) O3 (g) 205.2 142.7 163.2 238.9 CO(g) - 110.5 - 137.2 197.7 - CO2(g) - 393.5 - 394.4 213.8 N2(g) 191.6 NO(g) 91.3 87.6 210.8 NO2(g) 33.2 51.3 240.1
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