Specific does not change during phase change at constant temperature and...

Home / Chemical Engineering / Chemical Engineering Thermodynamics / Question

Examveda

Specific __________ does not change during phase change at constant temperature and pressure.

A. Entropy

B. Gibbs energy

C. Internal energy

D. Enthalpy

Answer: Option B

Solution(By Examveda Team)

We know specific Gibbs free energy is:
$$dG=vdp-sdT$$ for pure substance so, under constant temperature and pressure the gibbs free energy is equal to zero.

This Question Belongs to Chemical Engineering >> Chemical Engineering Thermodynamics

Join The Discussion

Related Questions on Chemical Engineering Thermodynamics

Sublimation temperature of dry ice (solid CO₂) is __________ °C.

A. -273

B. 0

C. -78

D. 5

View Answer

The equation relating E, P, V and T which is true for all substanes under all conditions is given by $${\left( {\frac{{\partial {\text{E}}}}{{\partial {\text{V}}}}} \right)_{\text{T}}} = {\text{T}} \cdot {\left( {\frac{{\partial {\text{P}}}}{{\partial {\text{T}}}}} \right)_{\text{H}}} - {\text{P}}{\text{.}}$$ This equation is called the

A. Maxwell's equation

B. Thermodynamic equation of state

C. Equation of state

D. Redlich-Kwong equation of state

View Answer

Henry's law is closely obeyed by a gas, when its __________ is extremely high.

A. Pressure

B. Solubility

C. Temperature

D. None of these

View Answer

If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero.

A. Enthalpy

B. Volume

C. Both A & B

D. Neither A nor B

View Answer

More Related Questions on Chemical Engineering Thermodynamics