Elementary Principles 16 - 2.45 (a) E(cal/mol), D0 (cm2/s)...

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2- 16 2.45 (a) E (cal/mol), D 0 (cm 2 /s) (b) ln D vs. 1/T, Slope=- E/R, intercept=ln D 0 . (c) Intercept = ln = -3.0151 = 0.05 cm / s 2 DD 00 . Slope = = -3666 K = (3666 K)(1.987 cal / mol K) = 7284 cal / mol −⇒ ER E / ln D = -3666(1/T) - 3.0151 -14.0 -13.0 -12.0 -11.0 -10.0 2.0E-03 2.1E-03 2.2E-03 2.3E-03 2.4E-03 2.5E-03 2.6E-03 2.7E-03 2.8E-03 2.9E-03 3.0E-03 1/T ln D (d) Spreadsheet T D 1/T lnD (1/T)*(lnD) (1/T)**2 347 1.34E-06 2.88E-03 -13.5
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