Be sure to answer all parts. The U.S. requires automobile fuels to contain a renewable component. The fermentation of glucose from corn produces ethanol, which is added to gasoline to fulfill this requirement: C6H12O6(s) → 2 C₂H₂OH(1) + 2 CO2(g) Calculate AH, AS° and AG° for the reaction at 25°C. Is the spontaneity of this reaction dependent on temperature? ΔΗ rxn =-68 AS 0 rxn AG° = J/K rxn =-227.9 The reaction is: spontaneous at all temperatures nonspontaneous at all temperatures spontaneous only at high temperatures spontaneous only at low temperatures spontaneous only in the reverse direction
Be sure to answer all parts. The U.S. requires automobile fuels to contain a renewable component. The fermentation of glucose from corn produces ethanol, which is added to gasoline to fulfill this requirement: C6H12O6(s) → 2 C₂H₂OH(1) + 2 CO2(g) Calculate AH, AS° and AG° for the reaction at 25°C. Is the spontaneity of this reaction dependent on temperature? ΔΗ rxn =-68 AS 0 rxn AG° = J/K rxn =-227.9 The reaction is: spontaneous at all temperatures nonspontaneous at all temperatures spontaneous only at high temperatures spontaneous only at low temperatures spontaneous only in the reverse direction
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter17: Chemcial Thermodynamics
Section: Chapter Questions
Problem 17.104QE: What is the sign of the standard Gibbs free-energy change at low temperatures and at high...
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Transcribed Image Text:Be sure to answer all parts.
The U.S. requires automobile fuels to contain a renewable component. The fermentation of glucose
from corn produces ethanol, which is added to gasoline to fulfill this requirement:
C6H12O6(s) → 2 C₂H₂OH(1) + 2 CO2(g)
Calculate AH, AS° and AG° for the reaction at 25°C. Is the spontaneity of this reaction dependent
on temperature?
ΔΗ
rxn
=-68
AS
0
rxn
AG°
=
J/K
rxn
=-227.9
The reaction is:
spontaneous at all temperatures
nonspontaneous at all temperatures
spontaneous only at high temperatures
spontaneous only at low temperatures
spontaneous only in the reverse direction
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