Gibbs free energy is defined as:

A G = H + TS

B G = H − TS

C G = H × TS

D G = H / TS

✓ Correct Answer: Option B

G = H − TS (Gibbs equation). ΔG = ΔH − TΔS determines spontaneity.

💡 Why is B) the correct answer?

The correct answer to the question "Gibbs free energy is defined as:" is Option B: G = H − TS.

The other options — A) G = H + TS, C) G = H × TS, D) G = H / TS — are incorrect for this PCAT Exam Prep question. As explained above: G = H − TS (Gibbs equation). ΔG = ΔH − TΔS determines spontaneity.

📚 About This PCAT Exam Prep Practice Question

This 2-level PCAT Exam Prep question from the Chemical Processes topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free PCAT Exam Prep practice test or use flashcards for spaced repetition review.

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Gibbs free energy is defined as:

✓ Correct Answer: Option B

📚 About This PCAT Exam Prep Practice Question

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