t
e
m
p
e
r
a
t
u
r
e
(
K
)
2
0
0
o
r
t
h
o
H
2
p
a
r
a
H
2
3
:
1
m
i
x
t
u
r
e
e
q
u
i
l
i
b
r
i
u
m
H
2
H
D