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 that gases behave ideally.

a. Calculate ΔrG∘ (298 K) for this reaction.
b. Calculate ΔrG (298 K) for this reaction at 130 bar.
c. State any important assumptions needed in addition to ideal gas behavior.

Check all that apply.

a. CH3COCOOH remains gase at 298 K and 130 bar.
b. CO2 remains gase at 298 K and 130 bar.
c. CH3CHO remains gase at 298 K and 130 bar.
d. None of the above.

chemical energy is stored in the chemical bonds of atoms and molecules. it can only be seen when it is released in a chemical reaction. when chemical energy is released, the substance from which the energy came is often changed into an entirely different substance.

this chemical reaction releases energy in the form of light and heat. chemical energy is the potential energy stored in the arrangement of atoms within molecules. breaking chemical bonds requires energy, while forming new chemical bonds releases energy.

the atp molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. in this form,energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

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