Chemical Engineering Thermodynamics
Which of the following is true for Virial equation of state?

Virial co-efficients
Virial co-efficients are function of temperature only
For some gases, Virial equations and ideal gas equations are the same
Virial co-efficients are universal constants

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Chemical Engineering Thermodynamics
High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

Δ H ≠ 0 and ΔS = 0
Δ H = 0 and ΔS ≠ 0
Δ H = 0 and ΔS = 0
Δ H ≠ 0 and ΔS ≠ 0

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

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