Learning Goal As Temperature Rises The Average Kinetic Energy Of Molecules Increases In A Chemical Reaction This Mea 1 (95.81 KiB) Viewed 34 times
Learning Goal As Temperature Rises The Average Kinetic Energy Of Molecules Increases In A Chemical Reaction This Mea 2 (52.12 KiB) Viewed 34 times
Learning Goal As Temperature Rises The Average Kinetic Energy Of Molecules Increases In A Chemical Reaction This Mea 3 (60.28 KiB) Viewed 34 times
Learning Goal: As temperature rises, the average kinetic energy of molecules increases. In a chemical reaction, this means that a higher percentage of the molecules possess the required activation energy, and the reaction goes faster. This relationship is shown by the Arrhenius equation k = Ae-Ea/RT where k is the rate constant, A is the frequency factor, Ea is the activation energy, R = 8.3145 J/(K-mol) is the gas constant, and T is the Kelvin temperature. The following rearranged version of the equation is also useful: k2 ¹(:)-(*) (*-*) = T2 k1 Ea R where ki is the rate constant at temperature T1, and k2 is the rate constant at temperature T2.
The rate constant of a chemical reaction increased from 0.100 s upon raising the temperature from 25.0 °C to 39.0 °C. Part A Calculate the value of is the final temperature. Express your answer numerically. View Available Hint(s) 11 (12-1) 六一六 72 ΑΣΦ to 3.20 s-1 where T₁ is the initial temperature and T2 B ? K-1
k2 Calculate the value of In where k₁ and k2 correspond to the rate k1 constants at the initial and the final temperatures as defined in part A. Express your answer numerically. View Available Hint(s) (2) ln Submit ▾ Part C 11 IVE ΑΣΦ VO ***** What is the activation energy of the reaction? Express your answer numerically in kilojoules per mole. ?
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