Gibbs Free Energy Spontaneity Thermodynamics gibbs free energy entropy spontaneity connects energy, heat, and disorder to predict whether a chemical reaction happens by itself. The Gibbs free energy equation brings enthalpy and entropy together into one number that sets the direction of change at constant temperature and pressure. Gibbs Free Energy Spontaneity Overview: Quick Answer The equation DG = DH - TDS predicts whether a process is spontaneous: negative DG means spontaneous, positive means non-spontaneous, and zero means equilibrium. Why Thermodynamics Gibbs Free Energy Entropy Spontaneity Matters Not all chemical reactions go forward on their own. Some release energy and proceed readily, while others need a steady energy supply to continue. It lets chemists predict direction without testing every reaction. It matters in industry, biology, and materials science: from fuel burning to protein folding to whether reactions reach equilibrium. Core Concepts at a Glance Quantity Symbol...
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