# Pyruvic acid decomposition

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1. Oct 22, 2015

### Ariel Jo

1. The problem statement, all variables and given/known data
Consider the reaction of pyruvic acid (CH3COCOOH) into gaseous acetaldehyde (CH3CHO) and gaseous CO2, which is catalyzed an aqueous solution by the enzyme pyruvate decarboxylase. Assume ideal gas behavior only for the CO2.
(a) Calculate ∆298 0 for this reaction.
(b) Calculate ∆ for this reaction at 298 K and 100 atm. State an important assumptions in addition to ideal gas behavior.

2. Relevant equations
ΔΔG=nRT ln(P2/P1) for part (b)
(So ΔG298K and 100atm=ΔGo+ΔΔG)

3. The attempt at a solution
EDIT: professor provided a table of standard free energies of formation for the reactants and products, I got standard free energy change for the reaction in part (a), it's -53.39kJ/mol
Now I need to do something about the non-ideal gas produced and the mol fractions of each gas to find the pressure before reaction and the pressure after reaction to plug into the equation above

Last edited: Oct 22, 2015
2. Oct 27, 2015