Gibbs Free Energy and Spontaneity of a Reaction

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10 Questions

What is the primary purpose of Gibbs free energy in thermodynamics?

To predict the spontaneity of a reaction

What is the relationship between the entropy of the universe and the ΔG of the system?

If the entropy of the universe increases, then the ΔG of the system will decrease

What is the unit of Gibbs free energy (G)?

Energy units

What is the condition for a reaction to be spontaneous according to the Gibbs free energy change (ΔG)?

ΔG is negative

What is the equation for Gibbs free energy (G)?

G = H - TS

What is the primary condition for a reaction to be spontaneous?

ΔG is negative

What is the relationship between ΔG and ΔSuniv for a spontaneous reaction?

ΔG is negative and ΔSuniv is positive

What is the formula for calculating ΔG at standard conditions?

ΔG⁰ = ΔH⁰ - TΔS⁰

What is the unit of entropy (S°) in the given sample problem?

J/K mol

What is the purpose of calculating ΔG for a reaction?

To predict the spontaneity of the reaction

Learn about Gibbs free energy and its relation to the spontaneity of a reaction. Understand the definition of Gibbs free energy, its units, and how it is used to predict changes in a system.

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