Chemistry · Chemical Thermodynamics
The Gibbs free energy of mixing (ΔGmix) for a regular binary solution of components A and B, at temperature T, expressed on the basis of the Margules equation parameter (ξ) for activity coefficients, is given by (in standard notation):
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1nRT ξxAxB
- 2nRT (xA ln yA + xB ln yB)
- 3nRT (xA ln xA + xB ln xB + ξxAxB)✓
- 4nRT (xA ln xA + xB ln xB)
Correct answer
nRT (xA ln xA + xB ln xB + ξxAxB)
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