What is free energy? What is its symbol?

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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Refer to Model 10.1 and answer the question that follows

  1. What is free energy? What is its symbol?
MODEL 10.1
A
(Reactant)
-
B- A
AG: CHANGE IN FREE ENERGY
Energy available to do work
Approaches zero as reaction
proceeds to equillibrium
• Predicts whether a reaction is
favorable
(Product)
Transition
state
Transition
state
AH: CHANGE IN ENTHALPY
• Heat released or absorbed
during a reaction
• Does not predict whether a
reaction is favorable
A
Initial state
Final state
AG is negative
AG is positive
Change in
free energy
of reaction
AG = AH-TAS
%3D
AS: CHANGE IN ENTROPY
Initial state
Final st
Measure of randomness
• Does not predict whether a
reaction is favorable
Progress of reaction-
Progress of reaction–
B
(5) KBJoue 00
Free energy (G)
Transcribed Image Text:MODEL 10.1 A (Reactant) - B- A AG: CHANGE IN FREE ENERGY Energy available to do work Approaches zero as reaction proceeds to equillibrium • Predicts whether a reaction is favorable (Product) Transition state Transition state AH: CHANGE IN ENTHALPY • Heat released or absorbed during a reaction • Does not predict whether a reaction is favorable A Initial state Final state AG is negative AG is positive Change in free energy of reaction AG = AH-TAS %3D AS: CHANGE IN ENTROPY Initial state Final st Measure of randomness • Does not predict whether a reaction is favorable Progress of reaction- Progress of reaction– B (5) KBJoue 00 Free energy (G)
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