The activation energy for the diffusion of carbon in chromium is 111,000 J/mol. Calculate the diffusion coefficient at 1100 K (827C), given that D at 1400 K (1127C) is 6.25 1011 m2/s

Explanation:

As the formula is as follows.

          D =

where,   D = diffusion coefficient

            = constant

            T = temperature

            R = gas constant

          = activation energy

For T = 1400 K,

For T = 1100 K,

Now,

      = exp (2.6)

                                 = 13.46

                   =

Thus, we can conclude that the diffusion coefficient at 1100 K is .

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