Equilibrium constant of a reaction varies with the

Question

Equilibrium constant of a reaction varies with the

A. Initial concentration of the reactant

B. Pressure

C. Temperature

D. None of these

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Comment

Charles' law for gases states that

A. V/T = Constant

B. V ∝ 1/T

C. V ∝ 1/P

D. PV/T = Constant

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If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) C₃H₈(g) will be __________ Kcal.

A. -19.4

B. -30.2

C. 55.2

D. -55.2

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Fugacity is most helpful in

A. Representing actual behaviour of real gases

B. Representing actual behaviour of ideal gases

C. The study of chemical equilibria involving gases at atmospheric pressure

D. None of these

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The most important application of distribution law is in

A. Evaporation

B. Liquid extraction

C. Drying

D. Distillation

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PV^y = constant, holds good for an isentropic process, which is

A. Reversible and isothermal

B. Isothermal and irreversible

C. Reversible and adiabatic

D. Adiabatic and irreversible

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In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

A. Adiabatic

B. Reversible

C. Isothermal

D. None of these

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When a gas in a vessel expands, its internal energy decreases. The process involved is

A. Reversible

B. Irreversible

C. Isothermal

D. Adiabatic

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First law of thermodynamics is mathematically stated as

A. dQ = dE + dW

B. dQ = dE - dW

C. dE = dQ + dW

D. dW = dQ + dE

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Heat of reaction at constant volume is identified with __________ change.

A. Enthalpy

B. Internal energy

C. Either (A) or (B)

D. Neither (A) nor (B)

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

A. Increases

B. Decreases

C. Remains unchanged

D. May increase or decrease; depends on the substance

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Which of the following is not an extensive property?

A. Free energy

B. Entropy

C. Refractive index

D. None of these

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Which of the following has the minimum value of COP for a given refrigeration effect?

A. Reverse Carnot cycle

B. Ordinary vapour-compression cycle

C. Vapour-compression process with a reversible expansion engine

D. Air refrigeration cycle

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When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the

A. Le-Chatelier principle

B. Kopp's rule

C. Law of corresponding state

D. Arrhenius hypothesis

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Melting of wax is accompanied with __________ in entropy.

A. Increase

B. Decrease

C. No change

D. None of these

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Gibbs phase rule finds application, when heat transfer occurs by

A. Conduction

B. Convection

C. Radiation

D. Condensation

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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

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A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

A. 448

B. 224

C. 22.4

D. Data insufficient; can't be computed

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The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

A. Less

B. More

C. Same

D. Dependent on climatic conditions

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4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

A. 4 J

B. ∞

C. 0

D. 8 J

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Reduced pressure of a gas is the ratio of its

A. Pressure to critical pressure

B. Critical pressure to pressure

C. Pressure to pseudocritical pressure

D. Pseudocritical pressure to pressure

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

A. 0

B. ∞

C. + ve

D. - ve

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Which of the following decreases with increase in pressure?

A. Melting point of ice

B. Melting point of wax

C. Boiling point of liquids

D. None of these

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There is a change in __________ during the phase transition.

A. Volume

B. Pressure

C. Temperature

D. All a, b & c

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Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

A. Sublimation

B. Fusion

C. Transition

D. Vaporisation

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In a turbine, the fluid expands almost

A. Isothermally

B. Isobarically

C. Adiabatically

D. None of these

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Specific/molar Gibbs free energy for a pure substance does not change during

A. Sublimation

B. Vaporisation

C. Melting

D. Either (A), (B) or (C)

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The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

A. Reversible isothermal volume change

B. Heating of a substance

C. Cooling of a substance

D. Simultaneous heating and expansion of an ideal gas

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A system in which there is exchange of energy but not of mass, is called a/an __________ system.

A. Isolated

B. Open

C. Insulated

D. Closed

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Which of the following is not a common refrigerant?

A. Freon-12

B. Ethylene

C. Ammonia

D. Carbon dioxide

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What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

A. 2

B. 0

C. 3

D. 1

Discuss this answer

Accepted Answer

C. Temperature

Equilibrium constant of a reaction varies with the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Charles' law for gases states that

If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) C₃H₈(g) will be __________ Kcal.

Fugacity is most helpful in

The most important application of distribution law is in

PV^y = constant, holds good for an isentropic process, which is

In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

When a gas in a vessel expands, its internal energy decreases. The process involved is

First law of thermodynamics is mathematically stated as

Heat of reaction at constant volume is identified with __________ change.

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

Which of the following is not an extensive property?

Which of the following has the minimum value of COP for a given refrigeration effect?

When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the

Melting of wax is accompanied with __________ in entropy.

Gibbs phase rule finds application, when heat transfer occurs by

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

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

Reduced pressure of a gas is the ratio of its

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

Which of the following decreases with increase in pressure?

There is a change in __________ during the phase transition.

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

In a turbine, the fluid expands almost

Specific/molar Gibbs free energy for a pure substance does not change during

The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

A system in which there is exchange of energy but not of mass, is called a/an __________ system.

Which of the following is not a common refrigerant?

What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

Also checkout

Equilibrium constant of a reaction varies with the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Charles' law for gases states that

If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) C3H8(g) will be __________ Kcal.

Fugacity is most helpful in

The most important application of distribution law is in

PVy = constant, holds good for an isentropic process, which is

In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.

When a gas in a vessel expands, its internal energy decreases. The process involved is

First law of thermodynamics is mathematically stated as

Heat of reaction at constant volume is identified with __________ change.

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

Which of the following is not an extensive property?

Which of the following has the minimum value of COP for a given refrigeration effect?

When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the

Melting of wax is accompanied with __________ in entropy.

Gibbs phase rule finds application, when heat transfer occurs by

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

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

Reduced pressure of a gas is the ratio of its

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

Which of the following decreases with increase in pressure?

There is a change in __________ during the phase transition.

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

In a turbine, the fluid expands almost

Specific/molar Gibbs free energy for a pure substance does not change during

The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for

A system in which there is exchange of energy but not of mass, is called a/an __________ system.

Which of the following is not a common refrigerant?

What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

Also checkout

If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) C₃H₈(g) will be __________ Kcal.

PV^y = constant, holds good for an isentropic process, which is

In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for