Solutions – fundamentals - Nonideal solutions in general
3 important questions on Solutions – fundamentals - Nonideal solutions in general
How can the chemical potential of a non-ideal solution be calculated?
By introducing the activity coefficient.
is the pure-phase chemical potential.
accounts for the nonidealities in the system.
is the pure-phase chemical potential.accounts for the nonidealities in the system.
Which two conventions determine the limiting behavior of the activity coefficient?
1. When component i is nearly pure so 
. When i is the dominant component the solution returns to ideal behavior.
2. When component i is dilute,
. In this case is the chemical potential at infinite dilution.
. When i is the dominant component the solution returns to ideal behavior.2. When component i is dilute,
. In this case is the chemical potential at infinite dilution.
What is the excess mixture Gibbs free energy?
The excess mixture Gibbs free energy is everything that is not ideal solution behaviour.
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