Chemical Engineering - Chemical Engineering Thermodynamics

41. 

Equilibrium constant decreases as the temperature

A. increases, for an exothermic reaction.
B. decreases, for an exothermic reaction.
C. increases, for an endothermic reaction.
D. none of these.

Answer: Option A

Explanation:

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42. 

The expression, , 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.

Answer: Option A

Explanation:

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43. 

All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

A. CO2
B. H2
C. O2
D. N2

Answer: Option B

Explanation:

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44. 

Compressibility factor for almost all the gases are approximately same at the same

A. pressure and temperature.
B. reduced pressure and reduced temperature.
C. critical pressure and critical temperature.
D. none of these.

Answer: Option B

Explanation:

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45. 

Pick out the wrong statement.

A. Activity co-efficient is dimensionless.
B. In case of an ideal gas, the fagacity is equal to its pressure.
C. In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component.
D. The fugacity co-efficient is zero for an ideal gas.

Answer: Option D

Explanation:

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