Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Anonymous
Anonymous asked in Science & MathematicsChemistry · 2 months ago

The rate of a reaction at 25.0 oC is 8 times faster than at 20.0 oC. Determine the activation energy (in kJ/mole) of this reaction.?

1 Answer

Relevance
  • 2 months ago

    Arrhenius equation:

    ln (k2/k1) = -Ea/R (1/T2 - 1/T1)

    k1 = 1

    k2 = 8 

    T1 = 20 + 273 = 293

    T2 = 25 + 273 = 298

    R = 0.008314 kJ/molK

    ln (8/1) = -Ea/0.008314 (1/298 - 1/293)

    2.08 = -Ea/0.008314 (-0.000057)

    Ea = 303 kJ/mol

Still have questions? Get your answers by asking now.