№

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