Phase Equilibria And Liquid-Vapor equilibrium

Question 1

Tendency of substance to change. Dependent on temp, pressure, and concentration

Answer 1

Chemical potential (u)
Temp up, u down (more stable)
Pressure up, u up (less stable)

Question 2

Basis of ohase diagram

Answer 2

Clapeyron equation

Question 3

Gibbs phase rule in one system

Answer 3

F=C-P+2

Question 4

Gibss phase rule of binary systems

Answer 4

F=C-P+1

Question 5

F=0 when intensive variables are fixed, called

Answer 5

Invariant

Question 6

States that molar entropies of vaporization of substances are almost the same provided that the interactions in liquid form are not significantly strong

Answer 6

Troutons rule

Question 7

Ideal liquid vapor solutions obey Raoult’s law; no enthalpy change upon mixing

Answer 7

Non-ideal liquid vapor solutions follow Henry’s rule at dilute solute concentration.

Question 8

____ Law relates amount of solvent present in solution with pressure above solution

Answer 8

Raoult’s Law

Question 9

___ Law shows real behavior at dilute concentrations

Answer 9

Henry’s law

Question 10

Represents equilibrium between two phases in phae diagrams

Answer 10

Tie lines

Question 11

First trace of vapor appears in ___ of phase diagram

Answer 11

Bubble point

Question 12

Last trace of liquid disappears in ___ of phase diagram

Answer 12

Dew point

Question 13

Used to determine the relative amounts of liquid and vapor.

Answer 13

Inverse laver arm rule (ILAR)