Temperature, ˚C

Gases

750

700

645

464

328

194

“Active” Gases

CO₂

65.0

61.1

64.3

91.1

89.5

76.4

CH₄

0.08

0.14

0.14

0.14

0.15

0.16

NH₃

0.06

0.007

0.01

0.10

0.007

0.01

H₂

25.0

24.5

21.3

5.12

6.96

13.6

HCl

5.39

8.61

8.61

1.51

1.48

4.66

HF

2.76

3.54

3.51

0.88

0.65

0.43

H₂S

0.10

0.62

0.53

1.07

1.05

4.27

SO₂

1.66

1.50

1.60

0.12

0.14

0.50

Total active gases

0.723

0.592

0.569

0.859

0.948

0.258

N₂

0.026

0.019

0.021

0.042

0.052

0.026

H₂O

99.25

99.39

99.41

99.10

99.00

99.72