Given the data in the table below and your knowledge of the "chemical standard state" (X) and the "biochemical standard state" (X°'), answer parts a) to e). a) For the dissociation of acetic acid at 298.15 K, calculate A,G and the corresponding pka. b) Even though by definition, AG (H+ (aq)) = 0 and AG (H+ (aq)) = 0, these are different physical quantities. What precisely does each represent? c) Calculate at 298.15 K, A,G for CH3COOH(aq) and CH3COO(aq). Gibbs free energy of formation, in units of kJ mol-¹, at T = 298.15 K AGⓇ A Gor -396.5 -369.3 0 CH3COOH(aq) CH3COO- (aq) H+ (aq) 0
Given the data in the table below and your knowledge of the "chemical standard state" (X) and the "biochemical standard state" (X°'), answer parts a) to e). a) For the dissociation of acetic acid at 298.15 K, calculate A,G and the corresponding pka. b) Even though by definition, AG (H+ (aq)) = 0 and AG (H+ (aq)) = 0, these are different physical quantities. What precisely does each represent? c) Calculate at 298.15 K, A,G for CH3COOH(aq) and CH3COO(aq). Gibbs free energy of formation, in units of kJ mol-¹, at T = 298.15 K AGⓇ A Gor -396.5 -369.3 0 CH3COOH(aq) CH3COO- (aq) H+ (aq) 0
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
Problem 1P
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Could you help with Part A and B of the question attached

Transcribed Image Text:CH3COOH(aq) = CH3COO-(aq) + H+ (aq)
Given the data in the table below and your knowledge of the "chemical standard
state" (X) and the "biochemical standard state" (X°), answer parts a) to e).
a) For the dissociation of acetic acid at 298.15 K,
calculate AG and the corresponding pka.
b) Even though by definition, AG (H+ (aq)) = 0
and A,Go' (H+ (aq)) = 0, these are different
physical quantities. What precisely does each
represent?
d)
e)
Gibbs free energy of formation,
in units of kJ mol-¹, at T = 298.15 K
AG
AfGor
CH3COOH(aq)
CH3COO- (aq)
H+ (aq)
-396.5
-369.3
0
c) Calculate at 298.15 K, A,Go for CH3COOH(aq)
and CH3COO-(aq).
For the dissociation of acetic acid at 298.15 K, calculate A,Gº¹.
Finally, using the formula to convert between standard states, show that that
your calculated values of AG and A.Gº are in agreement.
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