What happens to the driving force Δμ, when Xi (Concentration adjacent to the interface) approaches Xe (equilibrium concentration)? (For a dilute or ideal solution)

What happens to the driving force Δμ, when Xi (Concentration adjacent to the interface) approaches Xe (equilibrium concentration)? (For a dilute or ideal solution) Correct Answer Δμ=0

The driving force Δμ approaches 0 when Xe=Xi, this happens because the driving force is directly proportional to (Xi-Xe) and it can be calculated using the given formula Δμ= (RT/Xe)*(Xi-Xe), this is only applicable for dilute or ideal solution.
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