What does “Gibbs free energy” actually mean in Chemical Thermodynamics, and why does it matter for NEET?
ΔG = ΔH − TΔS decides spontaneity — negative ΔG means the process is spontaneous.
In simple words: ΔG = ΔH − TΔS decides spontaneity — negative ΔG means the process is spontaneous. Getting Gibbs free energy clear matters because NEET questions on Chemical Thermodynamics usually test this idea directly, not just a formula you memorised.
Key point
Gibbs free energy
Common mistake
judging spontaneity from ΔH alone.
Memory tip
an endothermic reaction can still be spontaneous if TΔS is large enough.
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