Reaction

Temperature, K

293

313

353

373

ΔG˚

LgK

ΔG˚

LgK

ΔG˚

LgK

ΔG˚

LgK

1

NiCl2 + H2S + Fe = NiS + FeCl2 + H2

−94.8

16.9

−94.3

15.7

−93.2

13.8

−92.7

13.0

2

FeS + NiCl2 = NiS + FeCl2

−26.0

4.6

−26.2

4.4

−26.8

4.0

−27.0

3.8

3

Fe7S8 + 7NiCl2 = 7NiS + 7FeCl2 + S

−146.9

26.4

−149.3

24.9

−151.7

22.4

−152.9

21.4

4

NiCl2 + Fe = Ni + FeCl2

−42.7

7.6

−43.1

7.2

−44.1

6.5

−44.6

6.2

5

Fe2S3 + 2NiCl2 = 2NiS + 2FeCl2 + S

24.5

−4.4

23.9

−4.0

22.5

−3.3

21.7

−3.0

6

NiCl2 + FeS2 = NiS + FeCl2 + S

31.1

−5.5

30.0

−5.0

27.8

−4.1

26.7

−3.7