ln
P (T )
A (2)
 A(1) 
T
Pa
 A(3)
K
Equation relation T and ΔHvap
ln
H vap
P2

P1
R
1 1 
  
 T2 T 1 
Equate and rearrange Antoine Equation
H vap
P (T )
P (T )
ln 2
 ln 1

Pa
Pa
R



A (2) 
 A(1)  T

2

 A(3) 

K




A (2)  
 A(1)  T

1

 A(3)  
K

 
P2 (T )



H


A
(
2
)
A
(
2
)
vap
ln Pa  
A(1) 
 A(1) 


P1 (T )
T2
T1
R 
 A(3)
 A(3) 
Pa
K
K


P2 (T )



H


A
(
2
)
A
(
2
)
vap
ln Pa  



P1 (T )
T2
R  T1
 A(3)
 A(3) 
Pa
K
K

P2 (T )



H
A
(
2
)


1
1
vap
ln Pa  



P1 (T )
T
T2
R
 1  A(3)
 A(3) 
Pa
K
K
