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Gibbs free energy (ΔG) will always be negative for a spontaneous process occurring at constant temperature and pressure. This typically occurs when the change in enthalpy (ΔH) is negative (exothermic reactions) and the change in entropy (ΔS) is positive, leading to a favorable increase in disorder. Additionally, even if ΔH is positive, a sufficiently large positive change in entropy can also result in a negative ΔG at high temperatures, according to the equation ΔG = ΔH - TΔS.
For a reaction with a positive enthalpy change (ΔH > 0) and a positive entropy change (ΔS > 0), the spontaneity is influenced by temperature through the Gibbs free energy equation: ΔG = ΔH - TΔS. As temperature increases, the TΔS term becomes larger, which can make ΔG more negative, thereby favoring spontaneity. Therefore, at higher temperatures, the reaction is more likely to be spontaneous, while at lower temperatures, it may not be spontaneous.
The purpose is to determine the available energy. Some of the energy in any system is useless - can't be converted into useful work.
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The Bee Gees or Brothers Gibbs were all born in Douglas, the largest town on the Isle of Man and the main port of entry. Barry Alan Crompton Gibb was born on September 1, 1946, and the twins Robin Hugh Gibb and Maurice Ernest Gibb on December 22, 1949. On December 28, 1957, the brothers and two friends performed live before the public for the first time at a local Gaumont cinema. The last of the Gibb children, Andrew Roy Gibb, was born March 5, 1958, in Manchester. He would later record and perform as Andy Gibb.