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Given the information A + B – 2D ΔΗ -646.9 kJ AS 294.0 J/K C– D AH° = 390.0 kJ AS -179.0 J/K %3D calculate AG° at 298 K for the reaction A + B 2C AG° =

Given the information A + B – 2D ΔΗ -646.9 kJ AS 294.0 J/K C– D AH° = 390.0 kJ AS -179.0 J/K %3D calculate AG° at 298 K for the reaction A + B 2C AG° =

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
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### Thermodynamic Calculations for Chemical Reactions Given the information: For the reaction: \[ A + B \rightarrow 2D \] \[ \Delta H^\circ = -646.9 \, \text{kJ} \qquad \Delta S^\circ = 294.0 \, \text{J/K} \] For the reaction: \[ C \rightarrow D \] \[ \Delta H^\circ = 390.0 \, \text{kJ} \qquad \Delta S^\circ = -179.0 \, \text{J/K} \] Calculate \(\Delta G^\circ\) at 298 K for the reaction: \[ A + B \rightarrow 2C \] ### Calculation The Gibbs free energy change \(\Delta G^\circ\) for a reaction at temperature \(T\) is given by the equation: \[ \Delta G^\circ = \Delta H^\circ - T\Delta S^\circ \] Where: - \(\Delta H^\circ\) is the standard enthalpy change. - \(\Delta S^\circ\) is the standard entropy change. - \(T\) is the temperature in Kelvin. **Put the given values into the formula to calculate \(\Delta G^\circ\) for the given reaction.** \[ \Delta G^\circ = \]
Transcribed Image Text:### Thermodynamic Calculations for Chemical Reactions Given the information: For the reaction: \[ A + B \rightarrow 2D \] \[ \Delta H^\circ = -646.9 \, \text{kJ} \qquad \Delta S^\circ = 294.0 \, \text{J/K} \] For the reaction: \[ C \rightarrow D \] \[ \Delta H^\circ = 390.0 \, \text{kJ} \qquad \Delta S^\circ = -179.0 \, \text{J/K} \] Calculate \(\Delta G^\circ\) at 298 K for the reaction: \[ A + B \rightarrow 2C \] ### Calculation The Gibbs free energy change \(\Delta G^\circ\) for a reaction at temperature \(T\) is given by the equation: \[ \Delta G^\circ = \Delta H^\circ - T\Delta S^\circ \] Where: - \(\Delta H^\circ\) is the standard enthalpy change. - \(\Delta S^\circ\) is the standard entropy change. - \(T\) is the temperature in Kelvin. **Put the given values into the formula to calculate \(\Delta G^\circ\) for the given reaction.** \[ \Delta G^\circ = \]
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