The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

Question

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

A. RT ln K

B. -RT ln K

C. -R ln K

D. T ln K

Share this question with your friends

Show all Chemical Engineering Thermodynamics MCQ

Comment

Melting of ice is an example of an __________ process.

A. Adiabatic

B. Isothermal

C. Isometric

D. None of these

Discuss this answer

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is

A. 0

B. ∞

C. +ve

D. -ve

Discuss this answer

For the reversible exothermic reaction, N₂ + 3H₂ 2NH₃, increase of pressure would

A. Shift the equilibrium towards right

B. Give higher yield of NH₃

C. Both (B) and (C)

D. Neither (A) nor (B)

Discuss this answer

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

A. Calorific value

B. Heat of reaction

C. Heat of combustion

D. Heat of formation

Discuss this answer

Gibbs free energy (G) is represented by, G = H - TS, whereas Helmholtz free energy, (A) is given by, A = E - TS. Which of the following is the Gibbs-Helmholtz equation?

A. [∂(G/T)/∂T] = - (H/T₂)

B. [∂(A/T)/∂T]_V = - E/T₂

C. Both (A) and (B)

D. Neither (A) nor (B)

Discuss this answer

Free energy change of mixing two liquid substances is a function of the

A. Concentration of the constituents only

B. Quantities of the constituents only

C. Temperature only

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

Discuss this answer

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

A. Fugacity

B. Partial pressure

C. Activity co-efficient

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

Discuss this answer

In a reversible process

A. Tds = dE + dW

B. dE - dW = Tds

C. dW - dE = Tds

D. Tds - dW + dE >0

Discuss this answer

The first law of thermodynamics is a restatement of the law of conservation of

A. Mass

B. Energy

C. Momentum

D. None of these

Discuss this answer

Charles' law for gases states that

A. V/T = Constant

B. V ∝ 1/T

C. V ∝ 1/P

D. PV/T = Constant

Discuss this answer

At absolute zero temperature, the __________ of the gas is zero.

A. Pressure

B. Volume

C. Mass

D. None of these

Discuss this answer

The equation, PV = nRT, is best obeyed by gases at

A. Low pressure & high temperature

B. High pressure & low temperature

C. Low pressure & low temperature

D. None of these

Discuss this answer

One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is

A. 30554

B. 10373

C. 4988.4

D. 4364.9

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

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

A. Increase

B. Decrease

C. Remain unchanged

D. First fall and then rise

Discuss this answer

In case of the decomposition of hydroiodic acid (2HI H₂ + I₂), addition of H₂ (at equilibrium condition) will

A. Increase the partial pressure of I₂

B. Decrease the partial pressure of HI

C. Diminish the degree of dissociation of HI

D. None of these

Discuss this answer

The extensive properties are

A. Volume, mass and number of moles

B. Free energy, entropy and enthalpy

C. Both (A) and (B)

D. None of these

Discuss this answer

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)

Discuss this answer

The standard Gibbs free energy change of a reaction depends on the equilibrium

A. Pressure

B. Temperature

C. Composition

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

Discuss this answer

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

A. 100

B. 50

C. 205

D. 200

Discuss this answer

Ideal refrigeration cycle is

A. Same as Carnot cycle

B. Same as reverse Carnot cycle

C. Dependent on the refrigerant's properties

D. The least efficient of all refrigeration processes

Discuss this answer

Which of the following is true for Virial equation of state?

A. Virial co-efficients are universal constants

B. Virial co-efficients 'B' represents three body interactions

C. Virial co-efficients are function of temperature only

D. For some gases, Virial equations and ideal gas equations are the same

Discuss this answer

If atmospheric temperature and dew point are nearly equal, then the relative humidity is

A. Zero

B. 50%

C. Almost 100%

D. unpredictable

Discuss this answer

Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

A. Gibbs-Duhem

B. Maxwell's

C. Clapeyron

D. None of these

Discuss this answer

Generation of heat by friction is an example of a/an __________ change.

A. Isothermal

B. Irreversible

C. Adiabatic

D. Reversible

Discuss this answer

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

A. Less than

B. More than

C. Same as

D. Not related to

Discuss this answer

Claude gas liquefaction process employs cooling

A. At constant pressure

B. By throttling

C. By expansion in an engine

D. None of these

Discuss this answer

An ideal monatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram. The work done during the cycle is

A. PV

B. 2PV

C. PV/2

D. 0

Discuss this answer

A domestic refrigerator has a/an __________ cooled condenser.

A. Water

B. Air

C. Evaporative

D. Gas

Discuss this answer

Standard temperature and pressure (S.T.P.) is

A. 0°C and 750 mm Hg

B. 15°C and 750 mm Hg

C. 0°C and 1 kgf/cm2

D. 15°C and 1 kgf/cm2

Discuss this answer

Accepted Answer

B. -RT ln K

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Melting of ice is an example of an __________ process.

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is

For the reversible exothermic reaction, N₂ + 3H₂ 2NH₃, increase of pressure would

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

Gibbs free energy (G) is represented by, G = H - TS, whereas Helmholtz free energy, (A) is given by, A = E - TS. Which of the following is the Gibbs-Helmholtz equation?

Free energy change of mixing two liquid substances is a function of the

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

In a reversible process

The first law of thermodynamics is a restatement of the law of conservation of

Charles' law for gases states that

At absolute zero temperature, the __________ of the gas is zero.

The equation, PV = nRT, is best obeyed by gases at

One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is

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

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

In case of the decomposition of hydroiodic acid (2HI H₂ + I₂), addition of H₂ (at equilibrium condition) will

The extensive properties are

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

The standard Gibbs free energy change of a reaction depends on the equilibrium

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

Ideal refrigeration cycle is

Which of the following is true for Virial equation of state?

If atmospheric temperature and dew point are nearly equal, then the relative humidity is

Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

Generation of heat by friction is an example of a/an __________ change.

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

Claude gas liquefaction process employs cooling

An ideal monatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram. The work done during the cycle is

A domestic refrigerator has a/an __________ cooled condenser.

Standard temperature and pressure (S.T.P.) is

Also checkout

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Melting of ice is an example of an __________ process.

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is

For the reversible exothermic reaction, N2 + 3H2 2NH3, increase of pressure would

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

Gibbs free energy (G) is represented by, G = H - TS, whereas Helmholtz free energy, (A) is given by, A = E - TS. Which of the following is the Gibbs-Helmholtz equation?

Free energy change of mixing two liquid substances is a function of the

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

In a reversible process

The first law of thermodynamics is a restatement of the law of conservation of

Charles' law for gases states that

At absolute zero temperature, the __________ of the gas is zero.

The equation, PV = nRT, is best obeyed by gases at

One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is

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

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

In case of the decomposition of hydroiodic acid (2HI H2 + I2), addition of H2 (at equilibrium condition) will

The extensive properties are

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

The standard Gibbs free energy change of a reaction depends on the equilibrium

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

Ideal refrigeration cycle is

Which of the following is true for Virial equation of state?

If atmospheric temperature and dew point are nearly equal, then the relative humidity is

Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

Generation of heat by friction is an example of a/an __________ change.

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

Claude gas liquefaction process employs cooling

An ideal monatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram. The work done during the cycle is

A domestic refrigerator has a/an __________ cooled condenser.

Standard temperature and pressure (S.T.P.) is

Also checkout

For the reversible exothermic reaction, N₂ + 3H₂ 2NH₃, increase of pressure would

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

In case of the decomposition of hydroiodic acid (2HI H₂ + I₂), addition of H₂ (at equilibrium condition) will