Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature __________ as its mole fraction increases.

Question

Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature __________ as its mole fraction increases.

A. Decreases

B. Decreases exponentially

C. Increases

D. Remain constant

Share this question with your friends

Show all Chemical Engineering Thermodynamics MCQ

Comment

The ratio of equilibrium constants (Kp2/Kp1) at two different temperatures is given by

A. (R/ΔH) (1/T₁ - 1/T₂)

B. (ΔH/R) (1/T₁ - 1/T₂)

C. (ΔH/R) (1/T₂ - 1/T₁)

D. (1/R) (1/T₁ - 1/T₂)

Discuss this answer

Which of the following is not a common refrigerant?

A. Freon-12

B. Ethylene

C. Ammonia

D. Carbon dioxide

Discuss this answer

When a gas is subjected to adiabatic expansion, it gets cooled due to

A. Decrease in velocity

B. Decrease in temperature

C. Decrease in kinetic energy

D. Energy spent in doing work

Discuss this answer

For a real gas, the chemical potential is given by

A. RT d ln P

B. RT d ln f

C. R d ln f

D. None of these

Discuss this answer

A refrigerator works on the principle of __________ law of thermodynamics.

A. Zeroth

B. First

C. Second

D. Third

Discuss this answer

For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

A. x

B. x + 1

C. x + 2

D. x + 3

Discuss this answer

In case of steady flow compression polytropic process (PVⁿ = constant), the work done on air is the lowest, when

A. n = y = 1.4

B. n = 0

C. n = 1

D. n = 1.66

Discuss this answer

Number of phases in a colloidal system is:

A. 1

B. 2

C. 3

D. 4

Discuss this answer

With increase in pressure (above atmospheric pressure), the C_p of a gas

A. Increases

B. Decreases

C. Remains unchanged

D. First decreases and then increases

Discuss this answer

The expression, ΔG = nRT. ln(P₂/P₁), gives the free energy change

A. With pressure changes at constant temperature

B. Under reversible isothermal volume change

C. During heating of an ideal gas

D. During cooling of an ideal gas

Discuss this answer

Chemical potential is a/an

A. Extensive property

B. Intensive property

C. Force which drives the chemical system to equilibrium

D. Both (B) and (C)

Discuss this answer

As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches

A. Zero

B. Unity

C. Infinity

D. None of these

Discuss this answer

Isobaric process means a constant process.

A. Temperature

B. Pressure

C. Volume

D. Entropy

Discuss this answer

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

A. Δ S₁ is always < Δ S_R

B. Δ S₁ is sometimes > Δ S_R

C. Δ S₁ is always > Δ S_R

D. Δ S₁ is always = Δ S_R

Discuss this answer

Which of the following will increase the volume of a real gas by four times?

A. Doubling the absolute temperature as well as pressure of the gas

B. Reducing pressure to one fourth at constant temperature

C. Reducing temperature to one fourth at constant pressure

D. Reducing the temperature to half and doubling the pressure

Discuss this answer

Entropy, which is a measure of the disorder of a system, is:

A. Independent of pressure

B. Independent of temperature

C. Zero at absolute zero temperature for a perfect crystalline substance

D. All (A), (B) & (C)

Discuss this answer

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

A. < 0

B. > 0

C. = 0

D. None of these

Discuss this answer

For spontaneous changes in an isolated system (S = entropy)

A. ds = 0

B. ds <0

C. ds > 0

D. ds = Constant

Discuss this answer

Melting of ice exemplifies a/an

A. Adiabatic process

B. Endothermic reaction

C. Exothermic reaction

D. Process involving a chemical reaction

Discuss this answer

At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is

A. Zero

B. One

C. Infinity

D. Negative

Discuss this answer

For a constant volume process __________ by the system is used only to increase the internal energy.

A. Heat absorbed

B. Work done

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

In the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

A. Increase

B. Decrease

C. Not alter

D. None of these

Discuss this answer

Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

A. Decreases

B. Increases

C. Remains constant

D. Decreases logarithmically

Discuss this answer

Pick out the Clausius-Clapeyron equation from the following:

A. dP/dT = ΔH/TΔV

B. ln P = - (ΔH/RT) + constant

C. ΔF = ΔH + T [∂(ΔF)/∂T]_P

D. None of these

Discuss this answer

For an incompressible fluid, the __________ is a function of both pressure as well as temperature.

A. Internal energy

B. Enthalpy

C. Entropy

D. All (A), (B) & (C)

Discuss this answer

Heat of formation of an element in its standard state is

A. 0

B. < 0

C. > 0

D. A function of pressure

Discuss this answer

For an irreversible process involving only pressure-volume work

A. (dF)_T, p <0

B. (dF)_T, p = 0

C. (dF)_T, p > 0

D. (dA)_T, v >0

Discuss this answer

An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to

A. 12 P1V1

B. 6 P1 V1

C. 3 P1V1

D. P1 V1

Discuss this answer

A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

A. Sub-cooled

B. Saturated

C. Non-solidifiable

D. None of these

Discuss this answer

With increase in compression ratio, the efficiency of the otto engine

A. Increases

B. Decreases

C. Remain constant

D. Increases linearly

Discuss this answer

Accepted Answer

C. Increases

Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature __________ as its mole fraction increases.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The ratio of equilibrium constants (Kp2/Kp1) at two different temperatures is given by

Which of the following is not a common refrigerant?

When a gas is subjected to adiabatic expansion, it gets cooled due to

For a real gas, the chemical potential is given by

A refrigerator works on the principle of __________ law of thermodynamics.

For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

In case of steady flow compression polytropic process (PVⁿ = constant), the work done on air is the lowest, when

Number of phases in a colloidal system is:

With increase in pressure (above atmospheric pressure), the C_p of a gas

The expression, ΔG = nRT. ln(P₂/P₁), gives the free energy change

Chemical potential is a/an

As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches

Isobaric process means a constant process.

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

Which of the following will increase the volume of a real gas by four times?

Entropy, which is a measure of the disorder of a system, is:

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

For spontaneous changes in an isolated system (S = entropy)

Melting of ice exemplifies a/an

At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is

For a constant volume process __________ by the system is used only to increase the internal energy.

In the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

Pick out the Clausius-Clapeyron equation from the following:

For an incompressible fluid, the __________ is a function of both pressure as well as temperature.

Heat of formation of an element in its standard state is

For an irreversible process involving only pressure-volume work

An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to

A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

With increase in compression ratio, the efficiency of the otto engine

Also checkout

Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature __________ as its mole fraction increases.

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The ratio of equilibrium constants (Kp2/Kp1) at two different temperatures is given by

Which of the following is not a common refrigerant?

When a gas is subjected to adiabatic expansion, it gets cooled due to

For a real gas, the chemical potential is given by

A refrigerator works on the principle of __________ law of thermodynamics.

For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when

Number of phases in a colloidal system is:

With increase in pressure (above atmospheric pressure), the Cp of a gas

The expression, ΔG = nRT. ln(P2/P1), gives the free energy change

Chemical potential is a/an

As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches

Isobaric process means a constant process.

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)

Which of the following will increase the volume of a real gas by four times?

Entropy, which is a measure of the disorder of a system, is:

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

For spontaneous changes in an isolated system (S = entropy)

Melting of ice exemplifies a/an

At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is

For a constant volume process __________ by the system is used only to increase the internal energy.

In the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

Pick out the Clausius-Clapeyron equation from the following:

For an incompressible fluid, the __________ is a function of both pressure as well as temperature.

Heat of formation of an element in its standard state is

For an irreversible process involving only pressure-volume work

An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to

A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

With increase in compression ratio, the efficiency of the otto engine

Also checkout

In case of steady flow compression polytropic process (PVⁿ = constant), the work done on air is the lowest, when

With increase in pressure (above atmospheric pressure), the C_p of a gas

The expression, ΔG = nRT. ln(P₂/P₁), gives the free energy change

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

In the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.