Multiple Choice
ΔG˚=141.7 kJ for the following reaction. Calculate ΔG: T=10˚C, [SO 3] = 25mM, [SO2] = 50mM, & [O2] = 75 mM.
2 SO3(g) ⇌ 2 SO2(g) + O2(g)
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1. Introduction to Biochemistry
Gibbs Free Energy
Multiple Choice
An exergonic reaction __________ free energy, and an endergonic reaction __________ free energy.
A
stores; destroys
B
requires; releases
C
absorbs; produces
D
releases; requires
Verified step by step guidance1
Understand the definitions of exergonic and endergonic reactions: Exergonic reactions release free energy, while endergonic reactions require an input of free energy to proceed.
Recall that free energy (denoted as ΔG) is a measure of the energy available to do work in a system. Exergonic reactions have a negative ΔG, indicating that energy is released, while endergonic reactions have a positive ΔG, indicating that energy is absorbed or required.
Analyze the options provided in the problem. Match the characteristics of exergonic and endergonic reactions to the correct descriptions.
For exergonic reactions, identify the term that corresponds to 'releases free energy.' For endergonic reactions, identify the term that corresponds to 'requires free energy.'
Select the correct answer based on the definitions and characteristics of these reactions: 'releases; requires.'
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