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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
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 

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.
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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