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Activation energy and pre exponential factor

  1. Mar 15, 2016 #1
    1. The problem statement, all variables and given/known data
    Calculate activation energy and pre exponential factor, i need help with the pre exponential factor

    2. Relevant equations
    Temperature °C
    -20 = 253 k
    -10= 263
    0=273
    10=283
    20=293
    Rate const. s-1
    1.15
    3.85
    11.3
    28.7
    74.0
    3. The attempt at a solution
    i already plotted the graph on excel . i got ea= -(r * gradient)= -8.314*0.7703*10^4) =64 kj/mol
    Pre exponential factor= E^(LN k + ea/RT) ^=E^(4.3+ 64/ 8.314*293 K) =?
     
  2. jcsd
  3. Mar 16, 2016 #2

    Borek

    User Avatar

    Staff: Mentor

    What's the problem with keying these numbers into the calculator?
     
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