Transcript Arrhenius presentation

The Arrhenius equation
Exponential form
R = gas constant
= 8.314 J K–1 mol–1
T = temperature in kelvin
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Exponential factor, e–Ea/RT: proportion of molecules that have sufficient
energy for a reaction to take place
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Pre-exponential term (frequency factor), A, accounts for the frequency of
collisions with the correct orientation
Logarithmic form
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A plot of ln k against 1/T gives a downward straight line graph of the
type y = mx + c
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gradient m = –Ea/R
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intercept on the y-axis, c = ln A.
Graph of ln k against 1/T
Ea from an Arrhenius plot