Calculate the value of D at 575°C for the diffusion of some species in a metal for which the values of D0 and Qd are 4.5 × 10-5 m2/s and 160 kJ/mol, respectively.

The value of D = 4.4 ×

Explanation:

Temperature T = 575 °c = 848 K

= 4.5 ×

= 160

The value of is given by the formula

= D exp  

Put all the values in above formula we get,

4.5 × = D exp

4.5 × = D × 1.023

D = 4.4 ×

This is the value of D.

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