Chemical Engineering Thermodynamics
Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions.

Real
Ideal
Isotonic
None of these

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Chemical Engineering Thermodynamics
The necessary and sufficient condition for equilibrium between two phases is

The temperature of each phase should be same
The concentration of each component should be same in the two phases
The pressure should be same in the two phases
The chemical potential of each component should be same in the two phases

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