ChE 123: Property Relations of Homogeneous Phases

Question 1

it is the measure of the maximum amount of useful work that can be extracted from a closed system at constant temperature and volume

Answer 1

helmholtz free energy (A)

Question 2

it is the measure of the maximum amount of useful work that can be extracted from a closed system at constant temperature and pressure

Answer 2

gibbs free energy (G)

Question 3

it is the energy required to create a system

Answer 3

internal energy

Question 4

it is the total heat content of the system

Answer 4

enthalpy

Question 5

The only requirements in property relations of homogeneous phases are that the system be ___________ and that the change occur between _____________________

Answer 5

closed, equilibrium states

Question 6

The entropy and volume changes from a to b consider that the _______ chemical species undergo phase change (a to b) at constant ____________

Answer 6

pure, T and P