If liquids A and B form an ideal solution, then what is the Gibbs free energy of mixing?

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Not defined

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Solution

The correct option is B <0
The Gibbs free energy of a system at any moment in time is defined as the enthalpy of the system minus the product of the temperature times the entropy of the system. For ideal solutions, the value of the Gibbs Free energy is always negative as mixing of ideal solutions is a spontaneous process.

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Δ H_{m i x} is the enthalpy of mixing.

Δ G_{m i x} is the gibbs free energy of mixing.

A

B

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