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Arrhineous Equation

relation between temperature and rate of reaction

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Arrhineous Equation

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  1. Arrhenius equation UNIS 2020

  2. Proportionality of rate constant, k and temperature

  3. Arrhenius equation: as temperature increases, the rate constant increases exponentially. K = rate constant A= frequency constant Ea = activation energy R= gas constant 8.31 J .mol-1. K-1 T= absolute temperature in kelvin

  4. Arrhenius rate constant and its natural logarithm

  5. Natural log form is an equation of straight line such as Y = mX + bIf we graph lnk vs. 1/T, we get a straight line with a slope of –Ea/Rand the Y intercept is lnA.

  6. Some relevant formulas borrowed from your data booklet Not very useful You plot the graph Two point calculation

  7. Typical problems we need to solve

  8. Answer to II

  9. Problem 2

  10. Answer to previous problem About 3 times faster!

  11. Problem#3

  12. Answer to problem #3 K2/K1 = (6.04EE-7/1.3EE-9) ≈ 465 times faster

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