answer the following questions with ture or false The condit

answer the following questions with ture or false?

The conditions for solid-vapor phase equilibrium for a pure component are: the chemical potential of the vapor phase equals the chemical potential of the liquid phase..... the pressure of the solid phase equals the temperature of the vapor phase the temperature of the vapor phase equals the temperature of the solid phase.... the enthalphy of the solid phase equals the enthalpy of the vapor phas.... Process quantities and state variables are fundamentally different .... Latent heat is a proper name for evaporation enthalpy Helmholtz energy is a name for Gibbs energy minus pressure times volume .... Gibbs energy is a name for internal energy minus temperature times entropy.... Enthalpy is a name for internal energy plus pressure times volume ....

Solution

15.a) For a solid phase is in equlibrium with its vapor phase then its chemical potential is equal to that of the vapor. So TRUE

b)FALSE, pressure cannot be equal to temperature.

c)TRUE, At solid-vapor equilibrium the temperature is same for both phases

d)FALSE, enthalpy of vapor is higher than that of solid phase

16.a) TRUE , The process quantity are path dependent and State quantities are path independent.

b)TRUE, latent heat of vaporization is also known as evaporation enthalpy

c) TRUE, helmhotz energy A=U-TS, gibbs energy G=U+pV-TS

therefore A=G-pV.

d)FALSE, G=U+pV-TS

e) TRUE, H=U+pV