Answer:
The value of D = 4.4 × [tex]10^{-5}[/tex]
Explanation:
Temperature T = 575 °c = 848 K
[tex]D_{0}[/tex] = 4.5 × [tex]10^{-5}[/tex] [tex]\frac{m^{2} }{sec}[/tex]
[tex]Q_{d}[/tex] = 160 [tex]\frac{KJ}{mol}[/tex]
The value of [tex]D_{0}[/tex] is given by the formula
[tex]D_{0}[/tex] = D exp [tex]( \frac{Q_{d} }{RT} )[/tex]
Put all the values in above formula we get,
4.5 × [tex]10^{-5}[/tex] = D exp [tex]\frac{160}{7050.272}[/tex]
4.5 × [tex]10^{-5}[/tex] = D × 1.023
D = 4.4 × [tex]10^{-5}[/tex]
This is the value of D.
