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 only

Temperature, pressure and liquid composition xi only

Temperature, pressure, liquid composition xi and vapour composition yi

Temperature and pressure only

Temperature only

Temperature, pressure and liquid composition xi only

Temperature, pressure, liquid composition xi and vapour composition yi

Temperature and pressure only

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Chemical Engineering Thermodynamics
If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as

Solubility increases as temperature decreases

Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution

Solubility increases as temperature increases

Solubility is independent of temperature

Solubility increases as temperature decreases

Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution

Solubility increases as temperature increases

Solubility is independent of temperature

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Chemical Engineering Thermodynamics
Work done in case of free expansion is

None of these

Zero

Negative

Indeterminate

None of these

Zero

Negative

Indeterminate

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Chemical Engineering Thermodynamics
Which of the following identities can be most easily used to verify steam table data for superheated steam.

(∂V/∂T)P = -(∂S/∂P)T

(∂T/∂V)S = (∂p/∂S)V

(∂P/∂T)V = (∂S/∂V)T

(∂T/∂P)S = (∂V/∂S)P

(∂V/∂T)P = -(∂S/∂P)T

(∂T/∂V)S = (∂p/∂S)V

(∂P/∂T)V = (∂S/∂V)T

(∂T/∂P)S = (∂V/∂S)P

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Chemical Engineering Thermodynamics
Co-efficient of performance for a reversed Carnot cycle working between temperatures T₁ and T₂ (T₁ > T₂) is

(T₁ - T₂)/T₂

T₂/(T₁ - T₂)

T₁/(T₁ - T₂)

(T₁ - T₂)/T₁

(T₁ - T₂)/T₂

T₂/(T₁ - T₂)

T₁/(T₁ - T₂)

(T₁ - T₂)/T₁

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Chemical Engineering Thermodynamics
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Increased COP

Same COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Increased COP

Same COP

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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as

Chemical Engineering Thermodynamics Work done in case of free expansion is

Chemical Engineering Thermodynamics Which of the following identities can be most easily used to verify steam table data for superheated steam.

Chemical Engineering Thermodynamics Co-efficient of performance for a reversed Carnot cycle working between temperatures T₁ and T₂ (T₁ > T₂) is

Chemical Engineering Thermodynamics Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Chemical Engineering Thermodynamics
If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as

Chemical Engineering Thermodynamics
Work done in case of free expansion is

Chemical Engineering Thermodynamics
Which of the following identities can be most easily used to verify steam table data for superheated steam.

Chemical Engineering Thermodynamics
Co-efficient of performance for a reversed Carnot cycle working between temperatures T₁ and T₂ (T₁ > T₂) is

Chemical Engineering Thermodynamics
Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in