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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
The extensive properties are

None of these
Free energy, entropy and enthalpy
Volume, mass and number of moles
Both A and B

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Chemical Engineering Thermodynamics
When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs. This phenomenon is related to the

Joule-Thomson effect
Gibbs-Helmholtz equation
Gibbs-Duhem equation
Third law of thermodynamics

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Chemical Engineering Thermodynamics
If we increase the pressure on a substance (which is at its triple point), then the triple point

Remains unchanged
Decreases
Increases
May increase or decrease ; depends on the substance

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Chemical Engineering Thermodynamics
Refrigerants commonly used for domestic refrigerators are

Freon-12
Propane
NH₃ or CO₂
Ethyl chloride or methyle chloride

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Chemical Engineering Thermodynamics
At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by(where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

μ° + RT ln f
μ° + R/T lnf
μ° + T lnf
μ°+ R lnf

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Chemical Engineering Thermodynamics
The ammonia synthesis reaction represented by N₂ + 3H₂ ⇋ 2NH₃ ; ΔH = - 22.4 kcal, is

Endothermic
Exothermic
Adiabatic
Isothermal

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