A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of

Chemical Engineering Thermodynamics
A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of

Temperature, pressure, liquid composition xi and vapour composition yi

Temperature only

Temperature, pressure and liquid composition xi only

Temperature and pressure only

Temperature, pressure, liquid composition xi and vapour composition yi

Temperature only

Temperature, pressure and liquid composition xi only

Temperature and pressure only

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Chemical Engineering Thermodynamics
Gibbs free energy of mixing at constant pressure and temperature is always

- ve

+ ve

∞

- ve

+ ve

∞

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Chemical Engineering Thermodynamics
In the ammonia synthesis reaction, N₂ + 3H₂ ⇋ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

Low pressure

Both low temperature and high pressure

High temperature

Low temperature only

Low pressure

Both low temperature and high pressure

High temperature

Low temperature only

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Chemical Engineering Thermodynamics
In the reaction, H₂ +I₂ ⇋ 2HI, addition of an inert gas will

Not effect the equilibrium conditions

Increase the partial pressure of I₂

Increase the partial pressure of H₂

Increase the total pressure and hence shift the equilibrium towards the right

Not effect the equilibrium conditions

Increase the partial pressure of I₂

Increase the partial pressure of H₂

Increase the total pressure and hence shift the equilibrium towards the right

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Chemical Engineering Thermodynamics
The total change in the enthalpy of a system is independent of the

Pressure and temperature

Number of intermediate chemical reactions involved

State of combination and aggregation in the beginning and at the end of the reaction

None of these

Pressure and temperature

Number of intermediate chemical reactions involved

State of combination and aggregation in the beginning and at the end of the reaction

None of these

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Chemical Engineering Thermodynamics
The reaction A (l) R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The number of degrees of freedom are

3

1

2

3

1

2

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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics Gibbs free energy of mixing at constant pressure and temperature is always

Chemical Engineering Thermodynamics In the ammonia synthesis reaction, N₂ + 3H₂ ⇋ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

Chemical Engineering Thermodynamics In the reaction, H₂ +I₂ ⇋ 2HI, addition of an inert gas will

Chemical Engineering Thermodynamics The total change in the enthalpy of a system is independent of the

Chemical Engineering Thermodynamics The reaction A (l) R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The number of degrees of freedom are

Chemical Engineering Thermodynamics
Gibbs free energy of mixing at constant pressure and temperature is always

Chemical Engineering Thermodynamics
In the ammonia synthesis reaction, N₂ + 3H₂ ⇋ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

Chemical Engineering Thermodynamics
In the reaction, H₂ +I₂ ⇋ 2HI, addition of an inert gas will

Chemical Engineering Thermodynamics
The total change in the enthalpy of a system is independent of the

Chemical Engineering Thermodynamics
The reaction A (l) R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The number of degrees of freedom are