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 .

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

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