Chemical Engineering Thermodynamics

Question: Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is
[A].

0

[B].

1

[C].

∞

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fugacity of a component in an ideal gas mixture is euqal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at contant pressure and temperature __________ as its mole fraction increases.
[A].

decreases

[B].

decreases exponentially

[C].

increases

[D].

remains constant

Answer: Option C

Explanation:

No answer description available for this question.

Question: If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the
[A].

process must be isobaric.

[B].

temperature must decrease.

[C].

process must be adiabatic.

[D].

both (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Consider the process A & B shown in the figure given below In this case, it is possilbe that
[A].

both the processes are adiabatic.

[B].

both the processes are isothermal.

[C].

process A is isothermal while B is adiabatic.

[D].

process A is adiabatic while B is isothermal.

Answer: Option C

Explanation:

No answer description available for this question.

Question: In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about __________ percent.
[A].

0.25

[B].

0.5

[C].

0.75

[D].

1

Answer: Option B

Explanation:

No answer description available for this question.

Question: Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole . °K
[A].

0

[B].

∞

[C].

50

[D].

100

Answer: Option B

Explanation:

No answer description available for this question.

Question: Entropy is a/an
[A].

state function

[B].

macroscopic property

[C].

extensive property

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ equation predicts the activity co-efficient from experimental data.
[A].

Lewis-Randall

[B].

Margules

[C].

Van Laar

[D].

both(b)&(c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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].

[B].

[C].

both (a) and (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.