Part B only. Thanks Exercise 3.16 Consider the reaction that converts pyruvic ac
ID: 902951 • Letter: P
Question
Part B only. Thanks
Exercise 3.16
Consider the reaction that converts pyruvic acid (CH3COCOOH) into gaseous acetaldehyde (CH3CHO) and gaseous CO2, which is catalyzed in aqueous solution by the enzyme pyruvate decarboxylase. Assume ideal gas behavior for CO2.
Part A
Calculate rG (298 K) for this reaction.
Express your answer to four significant figures and include the appropriate units.
-64.30 kJmol1
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Correct
Part B
Calculate rG (298 K) for this reaction at 130 bar.
Express your answer to three significant figures and include the appropriate units.
-40.2 kJmol1
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All attempts used; correct answer displayed
Part C
State any important assumptions needed in addition to ideal gas behavior.
Check all that apply.
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Exercise 3.16
Consider the reaction that converts pyruvic acid (CH3COCOOH) into gaseous acetaldehyde (CH3CHO) and gaseous CO2, which is catalyzed in aqueous solution by the enzyme pyruvate decarboxylase. Assume ideal gas behavior for CO2.
Part A
Calculate rG (298 K) for this reaction.
Express your answer to four significant figures and include the appropriate units.
-64.30 kJmol1
SubmitMy AnswersGive Up
Correct
Part B
Calculate rG (298 K) for this reaction at 130 bar.
Express your answer to three significant figures and include the appropriate units.
-40.2 kJmol1
SubmitMy AnswersGive Up
All attempts used; correct answer displayed
Part C
State any important assumptions needed in addition to ideal gas behavior.
Check all that apply.
CH3COCOOH remains gase at 298 K and 130 bar. CO2 remains gase at 298 K and 130 bar. CH3CHO remains gase at 298 K and 130 bar. None of the above.SubmitMy AnswersGive Up
Explanation / Answer
CH3COCOOH ----> CO2 + CH3CHO
DG= DG0 + RTLnQ
Q= (PCH3CHO) (PCO2) = (130)(130)
DG= -64.3 kJ/mol + 8.314x10-3kJ/mol.K x 298K x Ln (130)2 = -40.2 kJ/mol