75. Solving a chemistry problem

75. Solving a chemistry problem

7. The diffusion coefficient of iron in its oxides is expressed by the following equations:
DFe-FeO=0.118e-29700/RT(cm2/s):
DFe-Fe3O4=5.2e-55000/RT (cm2/s):
DFe-Fe3O4=4.0*105e-112000/RT (cm2/s):
Determine the diffusion coefficient (DFe) of iron in its oxides at t=600, 700, 800, 1000 C. Draw a graph and draw appropriate conclusions.

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