A binary system can be described by the regular solution model. The enthalpy of mixing is given by AHmix = X₁X₂ (6000X₁ + 4000X₂) (unit is J/mol). Determine the following quantities for a solution with X₁ = 20%, at T = 800 K: (a) ΔΗ1 (b) AG₁ (c) AVm (d) Plot the Gibbs free energy of the system, and show AG₂ on the figure. mix

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