Fisicoquimica - Atkins 8va Edicion 12.pdf [verified]

The change in Gibbs free energy for the isothermal expansion of 1 mol of an ideal gas from 1.0 dm³ to 2.0 dm³ at 298 K is 1.72 kJ. This result indicates that the process is spontaneous, as ΔG is negative is not obtained, however for an expansion ΔG=0 at constant temperature.

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ΔG = (1 mol) × (8.314 J/mol·K) × (298 K) × ln(2.0/1.0) = (1 mol) × (8.314 J/mol·K) × (298 K) × ln(2) = (1 mol) × (8.314 J/mol·K) × (298 K) × 0.693 = 1720 J = 1.72 kJ The change in Gibbs free energy for the

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