Chemical Engineering Thermodynamics
Gibbs-Duhem equation

Finds no application in gas-liquid equilibria involved in distillation
Applies only to binary systems
None of these
States that n₁dμ₁ + n₂dμ₂ + ....njdμj = 0, for a system of definite composition at constant temperature and pressure

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Chemical Engineering Thermodynamics
It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.

The amount of work needed is independent of path
More information is needed to conclude anything about the path dependence or otherwise of the work needed
The amount of work needed is path dependent
Work alone can not bring out such a change of state

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