Consider the conversion of glucose to ethanol and carbon dioxide at a constant pressure of 1 atm and 25 °C. Thermodynamics parameters values are given in the table below. C6H1206 (s)→→ CH₂CH₂OH (1) + 2 CO₂ (g) Glucose (s) Ethanol (1) Carbon dioxide (g) S (J. K-¹ mol-¹) 212.1 160.7 213.7 -) Calculate AHOIXI rxn AGO (kJ/mol) -910.5 -174.1 -394.4 ) Calculate the Gibbs free energy change AGº for the conversion of glucose to ethanol and CO₂ at 25 °C. -) Suppose 0.5 mole of glucose is completely converted to ethanol and carbon dioxide at 25 °C. What is the amount of heat q evolved in this process? Explain. 1) If this reaction is performed at a pressure of 1 atm and 0 °C, will the reaction be more favorable, less favorable, or stay the same as the reaction performed at a pressure of 1 atm and 25 °C? Explain.

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1. Consider the conversion of glucose to ethanol and carbon dioxide at a constant pressure of 1
atm and 25 °C.
Thermodynamics parameters values are given in the table below.
C6H1206 (s) →→ CH₂CH₂OH (1) + 2 CO₂ (g)
Glucose (s)
Ethanol (1)
Carbon dioxide (g)
b) Calculate AHº
S (J. K-¹ mol-¹)
212.1
160.7
rxn.
213.7
AGO (kJ/mol)
-910.5
-174.1
a) Calculate the Gibbs free energy change AG for the conversion of glucose to ethanol and CO₂ at
25 °C.
-394.4
c) Suppose 0.5 mole of glucose is completely converted to ethanol and carbon dioxide at 25 °C.
What is the amount of heat q evolved in this process? Explain.
d) If this reaction is performed at a pressure of 1 atm and 0 °C, will the reaction be more favorable,
less favorable, or stay the same as the reaction performed at a pressure of 1 atm and 25 °C?
Explain.
Transcribed Image Text:1. Consider the conversion of glucose to ethanol and carbon dioxide at a constant pressure of 1 atm and 25 °C. Thermodynamics parameters values are given in the table below. C6H1206 (s) →→ CH₂CH₂OH (1) + 2 CO₂ (g) Glucose (s) Ethanol (1) Carbon dioxide (g) b) Calculate AHº S (J. K-¹ mol-¹) 212.1 160.7 rxn. 213.7 AGO (kJ/mol) -910.5 -174.1 a) Calculate the Gibbs free energy change AG for the conversion of glucose to ethanol and CO₂ at 25 °C. -394.4 c) Suppose 0.5 mole of glucose is completely converted to ethanol and carbon dioxide at 25 °C. What is the amount of heat q evolved in this process? Explain. d) If this reaction is performed at a pressure of 1 atm and 0 °C, will the reaction be more favorable, less favorable, or stay the same as the reaction performed at a pressure of 1 atm and 25 °C? Explain.
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