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The following diffusion data was obtained for the diffusion of Burchardium (Bd)

ID: 1718720 • Letter: T

Question

The following diffusion data was obtained for the diffusion of Burchardium (Bd) in Stevensonium Oxide (SvO). The temperature dependence of diffusion coefficients is known to follow Arrhenius behavior according the formula: D(T) = D_0 = exp(-Q/RT) where D(T) is the temperature dependent diffusion coefficient D_0 is the pre-exponential term and Q is the activation energy. Using computer graphing software (Excel is sufficient) construct a plot of In(D(T)) over(1/T). Fit linear trend line to the resulting plot to determine the slope and intercept (Excel wil do this for you automatically), and use these values to calculate the activation energy (report kj/mol) and the pre-exponential (report in m^2/sec). (Remember to convert temperature to degrees Kelvin) Rccall: The Arrhenius equation for the diffusion coefficient can be hneanze as follows. D(T) = D_0.exp(-Q/RT) Take the natural log of both sides: ln(D(T)) = ln(D_0) + (_Q/R)1/T Which follows the form: y = b + mx Where: y = In(D(T) b = In (D_0) m=-Q/R Therefore a plot of "ln(D(T))" over "1/T"will be a straight line with a intercept: ln(D_0) and slope:-Q/R

Explanation / Answer

Link to excel file

https://drive.google.com/file/d/0Byr5t30kJhKZazBJaHJyTVJ3azQ/view?usp=sharing

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